Very Good budget Scan Tool for Toyota owners and Lexus owners

A Toyota master diagnostic technician reviews a very good budget scan tool for Toyota owners and Lexus owners.
Find the tool on the channel's Amazon store:
www.amazon.com/shop/thecarcarenut
*as an amazon associate I earn from qualifying purchases.
Discount Code : CarCareNut20 for 20% Off adapter
Check supported features before buying:
caristaapp.com/vehicles
In this video I respond to an invitation from a company called Carista to review their OBDII scanner. I normally would recommend you get the cheapest scanner you can find as most of the cheap ones do the same thing. The professional grade scan tools typically are the ones that are capable of doing the work that people look for and they usually cost a lot and don't make financial sense for DIY mechanics or even car owners and enthusiasts.
However this one is different and I was really impressed by it's features. I review the tool and highlight some of the most impressive features.
Highlighted features:
1- Toyota and Lexus customizations. These are settings that you can change to customize your car options. This is typically reserved for the ultra expensive and dealers exclusive Tech stream, however this small inexpensive scanner can do the same thing on models supported.
2- TPMS sensor registration on models supported. This goes without explanation as one visit to the dealership to program a sensor will pay for this scanner!
About the only thing I don't like about the scanner is the monthly subscription but I do understand the company's business model as they offer a lot with this tool.
#thecarcarenut #toyota #toyotadiy
0:00 Intro
1:35 Initial Impressions
2:37 Function Test\Demo
13:32 Cons and final thoughts

[@kaseypoon]

When I bought my '22 Corolla hatchback, I asked the dealer to enable the all windows down with key fob feature. He said nobody had ever asked for that, but he did it for free. However, he wouldn't disable the seatbelt chime because he said it was a safety issue. So I bought an OBDII ELM327 Bluetooth dongle & signed up for a 7-day free trial of Carista. I made all the changes I wanted & canceled before the free trial expired.

[@barackblows1942]

My stealer, Advantage River Oaks Toyota in Calumet City, Illinois, wants $150.00 to program my windows to roll down and the moon roof to open using my remote. I told them no thanks. Now I see that you can do it in 5-minutes. What a scam, I hate stealers. I spent over $36k on a new 2021 RAV4 Limited and they’re too cheap to program the windows for me.💩

[@TheCarCareNut]

That is ridiculous! Most dealership in your area would do this for free, especially the selling dealership!

[@pawelz8072]

I have been using Carista dongle for some time now to service couple Audi vehicles as well as my two Lexus vehicles. I find it very useful when I need to disengage E Brake on Audis when replacing rear pads.

[@bobbrewer5182]

I bought this device last year, here in Australia, it is fantastic for what it does.

[@michaelnash2202]

I just received it, and I was able to customize my 15 Camry... I wanted to do this a long time ago ❤️. Thanks AMD for sharing this good product with us.

[@TheCarCareNut]

Glad it worked good Michael!

[@stephendibari5010]

Thanks ! If I get this I’ll go for the yearly subscription for less than $5 a month. I have the same scan tool that you showed in the first few minutes. It’s a basic one that just gives codes but this is so much more

[@ChrisWilliams-pu8pj]

I did not expect as quick a response to question on scanners. Thank you!

[@robertweber3140]

Most impressive, even if it takes awhile for the diagnostic. Thanks for sharing AMD!

[@fransb8543]

Thanks dude, as a recent convert to the Lexus brand, I've watched a lot of your videos and I really appreciate your efforts.

[@MuhammadIsmail-tr1hu]

I baught this and it is Awesome. It was unable to read Airbag codes for my JDM Toyota Prius 2016. Even after sending them the debug data they could not figure it out. A free android app using Carista was able to read them. Awesome Customizations and happy with what I get for the price.

[@browneyes2674]

Hello AMD. I hope you are well. I love watching your videos, always a thumbs up. Peace from the UK

[@ortiz73caify]

Thank you so much and God bless you for all the great information you get out to us.

[@r.m.s.605]

You are awesome!!! Thank you for all your great advice!

[@RADIORUNNER1966]

Thanks for this sir , very much appreciated for my 2019 Rav4

[@matthewcacace6804]

You're the best Ahmed! Thanks for the review, very helpful tool.

[@TheCarCareNut]

Thank you Mathew!

[@RobS123]

I asked my local dealer about enabling the All Windows Down feature on my 2022 4Runner when I had it in for an oil change. They quoted me over $100! Carista is well worth it! Too bad we can't enable Remote Start.

[@moose354]

More great DIY information. AMD, thanks for posting.

[@redwine1671]

Thank you as always, amazing content, very very useful information!

[@thetechlibrarian]

Oh man I just noticed you have a coupon code for this I have been for a few months now and just never got around to it perfect time and with the stimulus check hitting today I will definitely be using your code

[@mikechiodetti4482]

Nice tool! I have a Matco MaxMe which I have not plugged into my 2020 RAV4. One day soon I'll try it.

[@GrandHuevotes]

i just used that on my 2021 Lexus ES hybrid. like literally the other day. used it for customizing options, blinkers etc

[@chrisbaty3824]

What did you do to your blinkers? Curious!

[@iluvphysio]

@@chrisbaty3824 I think he added fluid.

[@woodstream6137]

@@iluvphysio 😆

[@chopwork8576]

Thanks for posting this!!!

[@pghturbo88]

I have a second set of rims for my 2017 Avalon Limited with non-cloned TPMS sensors, so I need to be able to change ID's with summer and winter tire changeovers. For a number of years now I have successfully used the ATEQ Quickset TPMS ID tool for tire changeovers on my 2009 Accord and 2010 Corolla. The Quickset says that it also covers my 2017 Avalon, but it does not work for me, and repeated conversations with ATEQ customer service was unable to resolve. My Foxwell Elite 510 scan tool with Toyota software was also supposed to support TPMS ID registration, but it does not have that function for my 2017 Avalon. I found the Carista tool and have been using that (paying the monthly fee when I do a tire rim swap) and it does work perfectly for TPMS IDs. I am hoping eventually that Foxwell or ATEQ will resolve the TPMS ID issues for my Avalon, but until then, I have a reliable way to do it with the Carista dongle and app.

[@LAactor]

Next time save the hassle and get a tpms sensor that clones the existing ID in the factory ones and bam, switch and the car doesn't know any difference.

[@EthanTweedie]

This is so cool! Thank you AMD

[@JSTODDARDJ]

sold. been waiting for someting like this

[@megahurts2]

Ohh thats a tempting to use tool, though I'm so use to using Torque with a BlueTooth OBD2 Adapter. I will say the customize options are super rad though.

[@mikeboyer1114]

Good vid. You got me excited, especially with the TPMS calibration but that’s not an enabled feature on the 2nd gen Tacoma :( I would have definitely looked into ordering one if you could do more than just scan codes.

[@mattb9664]

I was going to get one of these when my parents visited, then tweak my 4R (enable my rear window roll-down, etc), my wife's car and my parents car all in the same day.

[@junaidhassan6839]

I like this tool like you mentioned it pays for it self for the tpms programming I actually bought this tool since my tpms sender gone bad If they can mange to scan the tpms sensor that would be pretty awesome

[@theluckystrike6371]

I just wanted to say thank you sir, your dedication to the subscribers is amazing.!!! I’ve just recently purchased a 2021 Toyota 4Runner that I’m sure to have a question about sooner or later. You get a 👍🏻’s up from me on every single video.!!!! 🙂

[@chrisatx6303]

Bought FIX’D and so far it’s been awesome. I’m not sure if it does everything the product your reviewing does but hope it does. I didn’t know they had different brands with different features. Should have done my homework before I purchased. But so far happy with FIX’D, paid 69 bucks for the yearly subscription. Let’s see if it worth the money.

[@spacemaster5206]

Actually that's too much for those functions

[@mikee5076]

cool deal.... reminds me of the autel scan tool with features... here i am with Snap On Verus Pro D10 for personal use.

[@damiangrouse4564]

IMO, the “open window” mode is disabled because of carjacking danger. I myself set my aftermarket alarm to only open the driver door when I press once and all when I press twice fast. If someone is waiting in ambush it gives me a chance.

[@MissusDoge]

Thanks again for another great video. I was looking for something that could program TPMS IDs for E210 Corollas and this seems to fit the bill nicely.

[@English4MD]

Top man. Greetings from the UK.

[@michaelcorvin4330]

You sold me at disabling the seat belt warning chimes. Thanks for the suggestion!

[@spiralnapkin]

Did you know there's another way to disable those chimes and its free? Just wear your seat belt.

[@michaelcorvin4330]

@@spiralnapkin Gee, thanks Mother 🙄

[@kumara5492]

@@michaelcorvin4330 lol

[@carraldo]

The 2021 Rav4 can store 2 wheel sets. So they have to be initialized just once, which seems less complicated than via this dongle and app.

[@TheTaschLane]

Show idea: Would you do a show about Toyota & Lexus memory seats? Maybe this tool could enable the memory seat function, yes I found a secondhand 1/2/set controller box? My wife is 4’10.5” and I am 6’ tall. We currently have memory seats in our 2004 RX 330 and 2015 Highlander. We are now spoiled and have decided to insist on memory seats in our next vehicles. Unfortunately, Toyota Lexus do not offer memory seat options in the Corolla, Camry, or lower end Lexus. Thank you for your hard work and great information!!!

[@bigrockk2980]

That is impressive!, I currently use a dongle from Launch but this one is far more capable! Thanks AMD!

[@aseaninvest2389]

Thanks for the video! Could you please make a video on how to choose the right bulbs/LEDs for Toyota. I want to replace the fog lights and turn signals with LEDs in my 2020 Rav4 hybrid. Could you please discuss this topic? What to look at, how to choose, how to install correctly and not damage the electronics? In particular, the question is, is it possible to put daytime lights from the RAV4 prime on the Rav4 hybrid? Thank you very much!

[@scott_meyer]

I used Carista to disable the infernal reverse beeping on my Prius.

[@ValentinDilta]

Thanks again for another great video!!!

[@joychung3639]

another the cons is the company need to upgrade the microchip inside the dongle. the time u need to wait for each menu to appear is long. it really affect between great buy and ok buy.

[@LacDole]

Wait what?? You can roll down the windows from your remote like Honda used to do until early 2010s!! Looks like a cool tool but I checked the customizations for my '16 Tacoma are very limited. You are right though, the TPMS program tool could be fun for my Mud / Road tires swap.

[@NMBSUMMER]

Dang, I was gonna buy the unit for my '15 Tundra just for the window down feature! I'm gonna email the company first thx!

[@ghostridertom]

Got it and just turned off the artificial augmented sound in GR YARIS :-) Love it. Stays off after one deactivation so really a great way for someone hating the speaker augmented sound :-). GR YARIS is a great machine, sadly no GR YARIS in the US market :-( Usually, it is another way around.

[@TheCarCareNut]

😠 we get the Mazda 2 Yaris and you get the awesome GR.... J/k beautiful car you have. Wish we can get it stateside one day.

[@ghostridertom]

@@TheCarCareNut The HYPE is real, it really is a micro WRC car for the daily driving :-)

[@buckeye43210]

Carista now offers a lifetime access subscription for $89.99

[@spacemaster5206]

No thank you

[@keystonecop2005]

Not on their website any more. They only offer Yearly or monthly.

[@leontchekmedyian]

AMD, love your videos. Can you please explain what does A/C compressor noise reduction Enabled / Disabled option? Is this related to the RAV4 prime big noise in cool temperatures? Thanks!

[@TheKevinFanClub526]

That customization. I'm sold.

[@markrice3019]

good review!!

[@Elt31987]

I'd be extremely interested in your opinion on Dr. Prius. Myself and others have used this to test the traction battery life expectancy. How accurate do you think it is and do you at the dealership have a way of testing it's life expectancy?

[@TheCarCareNut]

I haven’t had much time with Dr Prius to have an opinion on it. But I will say that there’s no 100% accurate way of testing the hybrid battery. Short of load testing each cell which is not feasible

[@jaws10278]

Used this before. Lost the little unit. But its an amazing little gadget!

[@jensenwilliam5434]

Thank you!!!!

[@nimibc635]

Thank you for all the excellent videos you have created. I have the Carista dongle and use it with the "car scanner" app dashboard to show oil temp, water temp etc. I am waiting on the 2023 Corolla hybrid hatchback to arrive and wonder where I can get the specs for the normal ranges for oil temp, inverter temp, hybrid battery voltage etc. It is great to be able to display the values, but it would have more meaning knowing what the range of 'normal' values are. Does Toyota make these publicly available? cheers

[@mandeep1103]

Very good information

[@rondhole]

For hybrid, Dr. prius does way more than carista software. And it is free. For non hybtid, Torque has much more option too and much cheaper too

[@jmer3536]

Thank you for this recommendation. I think I will get it in the future. I wish I knew about this before I recently bought a newer bluetooth OBDII adaptor. What is your opinion on the TORQUE app if you have not mentioned it in a video yet.

[@TheCarCareNut]

Hi! I don’t have much experience with the torque app but I am looking into it

[@jmer3536]

@@TheCarCareNut Thank You SIr

[@anthonycolbourne4206]

8:10 That "open windows with long press" was activated on my 4Runner when I bought it, and within a week of owning the car, the windows were rolled down and the sunroof opened in the rain while I sat inside the house eating my breakfast. I was not impressed that just having the keys in my pocket would be enough to activate such a feature. And then there is no way to CLOSE the windows with the remote! You have to go outside in the rain and use the physical key in the door to close everything up again.

[@gwilli1754]

I had used the feature on a consistent basis for my Acura, which came with the feature, and probably the one thing that I miss of the TL. I never came across accidental opening, yikes, that could be a total damage event if the car gets flooded!!! Thanks for sharing, makes sense why Toyota opted out of activating the feature!!!

[@maloosecat123]

Thank you for your videos...any suggestion how to do a lenghty scan or upgrade procedure with a Prius in Ignition mode so that 12V battery does not drop under 12 Volts? I have several Battery Chargers

[@sneakyguy8917]

Thanks mate, great advice. I assume that I can buy the dongle now and activate the app once my new RAV4 arrives? Also, while I don't mind paying subscriptions for things I use, I will only be using this to turn off the annoying warning beeps. and probably wont use it again for a long time. If I need to use it again in the future can I activate the app for a month and then cancel again after that or is there a limit on how often I can do that?

[@TheCarCareNut]

You can do that. The subscription is done through the app not the dongle

[@thinkcartool3825]

Good DIY scanner for home mechanics

[@hothmobile100]

Can this one measure Transmission fluid temperature so that we can do the "check level" procedure on sealed transmissions like the AC60E?

[@kiwiasian]

I got this to pair a new TPMS on the Lexus, then I saw all the customizations possible - wow!

[@fishingguy8911]

Thank you sir

[@jhill4071]

Regarding a 2017 Toyota Camry Hybrid. So you plug the dongle in, turn on the car (push the start button once) and wait for the down load data to be completely processed by the Carista software in the iPhone. How long can one leave the power on before that tiny 12v battery in the trunk gets upset.

[@TheCarCareNut]

Hi! You can actually start the car and connect it to the car as well.

[@robertkassel9419]

I will have to check if it will work with the Rav4 Prime - if so, are there enough features that the Carista will do that I could not do without it that would make it worth while? Lots of set up abilities with the Prime.

[@TheCarCareNut]

Hi! Honestly if all the features are supported for your model I think it’s worth it.

[@PattyKuluCakes]

I used Carista to turn off my Prius’ reverse beeper.

[@shaneanderson1036]

my 2005 toyota reverse beeper drives us crazy !! wish this unit would work on it but it won’t

[@scott_meyer]

Same here. One beep is much better than continuous beeping.

[@pablojonathanduranra]

I think that by these time there might be a update for all or some 2018 to add remote start control. I'm saying that because I got a 2018 cmaty end I would love too to have that install u let me know thankdn

[@peterf4719]

Can you program 2 sets of TPMS sensors in a 2022 Lexus UX250H? I have 2 sets of rims winter and all season both with original Lexus sensors.

[@edwagman]

A discount code is mentioned, to be located in the comments section. I looked but did not find a code. Can you be more specific what the code is, for use when ordering on the Carista web site?

[@YouTubeviolatesmy1stamendment]

I bought one of those the first day I got my new truck

[@mullvadenbengt2859]

Is not Auris sold in the US but named Corolla? In microcat or if it's in techstream Auris is called Auris/Corolla

[@rdcampos1]

I am getting a 2023, 1794 Tundra Hybrid. I am going to be adding larger tires. Would I be able to update the tire size with Carista or can the dealership update the size? I asked our local dealership and the service manager said they would have to check. Thank you!

[@kai-ys9le]

does it show transmission fluid temperature? or has to be subscribed ?

[@whittielockett7611]

Will it register new TPMS on 2010 4Runner OR should I use the Lexus GX or Tacoma as an alternative?

[@dave841084]

Hi again . Will the customization settings void my 2021 warranty? I mean, removing some dings, alerts or changing windows settings… seatbelt alerts… will this type of modification void my Toyota warranty? If I take it for the “free” oil changes during the warranty period

[@TheCarCareNut]

Hi! It won’t void your warranty as these are customizations allowed by Toyota

[@chuckasarus]

I just bought one for my 2018 Toyota 4Runner. I had no luck with this scanner.

[@charliekilo3]

Worthless for TPMS service on my 2011 Avalon Limited but thanks for the informative video.

[@jonm2522]

Can you modify the CPU to make the Hybrid be more efficient or go faster. 2. Change the min speed for the EV from 30km to 50 or 60kms. Cheers

[@jorgedesousa8361]

This device is useful if you replace the factory radio with an aftermarket unit and loose all the settings capabilities.

[@TheCarCareNut]

Very true!

[@jeffsmith3240]

Perhaps also suggest Torque App which can be free (trial) or Pro for a small single one off cost (when I purchased it). Works well with toyota and lexus with selected PID option.

[@johnfitbyfaithnet]

Do you use the Carista with Dr prius?

[@jeffsmith3240]

@@johnfitbyfaithnet no

[@germanarzola2576]

What about a tool we can use to read transmission temps?

[@kumara5492]

Hello Sir, your videos are very informative. I am planning to purchase Carista after watching this video. My concern is, will it detect the problem on my Toyota Prius V 2013 ( 190,000 miles) that throws overheat sign comes on for few seconds and goes off, after 15 to 20 minutes of driving. To be more precise, ( I think) , the overheat sign stays on during the period when thermostat opens and coolant circulates gushing into the reservoir tank. I recently changed Thermostat ( aftermarket thermostat) and got the coolant flushed at the dealer so that it shouldn't have any air in the cooling system. Could it be that Coolant Temperature sensor is misreading the temperature. I really appreciate your reply. Thank you.

[@TheCarCareNut]

Hi! Carista can’t view live data which you might need to access to see what’s going on with your Prius. If there are not trouble codes you will need to see what’s happening with the coolant temp reading when the light comes on

[@kumara5492]

@@TheCarCareNut Can you please recommend any other scan tool that reads live data so that I can know if the overheat sign is due to faulty coolant temperature sensor or aftermarket thermostat or blown head gasket in it's initial stage assuming there's no air in the coolant system after driving in this condition for six months ( system might have self burped the air from the coolant system).

[@TheCarCareNut]

I haven’t tried it personally but many viewers spoken highly of blue driver on data reading

[@henrys.4376]

Could this be used to turn off the turn signal bulb out fast flashing when using aftermarket led turn signals?

[@TheCarCareNut]

Hi! No there’s no option to do that. The way to fix that is to get a resistor

[@samloganc]

Will doing any of this void your Toyota warranty in any way? Thanks for everything you do!!

[@TheCarCareNut]

Hi! Not it won’t. You’re changing settings that Toyota allows to be changed.

[@alk3r056]

Hello, I would like to know if there is a way to release power in my 2022 Highlander XSE with any system or Dealer? Thanks..

[@denviss]

Hello, can you tell me, can I disable DRL with this dongle?

[@TheCarCareNut]

On some models you can

[@shawnrossi6364]

Does it have an option for the auto start from my key fob to leave the car running once I open the door? What about the button for the map inside the Toyota Camry it says Maps not installed is this device capable of unlocking the map?

[@dalephillips8250]

Does this tool also read you Transmission Temps while driving and for the purpose of fluid level checks when changing fluid?

[@TheCarCareNut]

Hi! So far Carista doesn’t show live data

[@INTERNA9]

Thank You

[@getmorecontent.]

How do you think Carista would do for a 2007 Toyota FJ Cruiser?

[@vinniekeller6120]

Great Timing ... I was going to ask which scan tools you would recommend for a Toyota Hybrid owner.

[@DUNGSTA]

Did you even watch the video?

[@rondhole]

Dr. Prius, much cheaper apps and does much more than carista apps. Works with carista dongle

[@woodstream6137]

@@rondhole I'll have to check that one out. I was going to buy this and then subscribe on an as needed basis. I don't need it often.

[@rondhole]

@@woodstream6137 Torque Pro from many source code source are free and can do many things. But Carista apps are very useful for older Toyota that may need scantool for reprogram TPMS. Other small stuff like beeping in reverse, beep or light on when key lock/unlock, hybrid battery condition (voltage and internal resistance), etc. are free in Dr. Prius. Those are the most interesting part of how Dr. Prius works great on Carista.

[@johnfitbyfaithnet]

I clicked the link but didn't find the Carista....

[@gerlopreger]

Good video, try the OBDLINK LX, I have a question about hybrid cars (Prius), you know what percentage of the battery is the lower limit to consider that the hybrid battery should be replaced, what do you think of a 2016 Prius with 38,500 miles and 83% life expectancy of the hybrid battery, thanks

[@TheCarCareNut]

Hi! Honestly there’s not concrete and accurate way to know the exact life of the hybrid battery. Looking at the age and mileage of the car it should be good. I would check the filter, if it looks clean then that’s a good sign if it’s clogged then likely it was not serviced and I would leave that car

[@gerlopreger]

@@TheCarCareNut what opinion do you have about dr. Prius, the app has a section that tests battery life expectancy, thanks in advance

[@TheCarCareNut]

Hi! I haven’t tested it myself however knowing the system there’s no accurate way to check it

[@tomb.8485]

Can I program my 2021 RAV4 gas model so the engine doesn’t turn off every time I am stopped at a stop light without hitting the override button each time The car is started? Oh and thank you for this and all your videos.

[@TheCarCareNut]

Hi Tom, so unfortunately that can’t be programmed. Carista has access to the provided customization features from Toyota not their own. The auto start stop is an emissions device and can’t be disabled officially through Toyota.

[@barackblows1942]

Tom B, What model do you have? I have a 2021 Limited AWD and it doesn’t have the start-stop. If it did, then I would have bought something else.

[@timothymroberts2949]

The auto start/stop feature on select Toyota vehicles is an innovative feature that lets you run more efficiently. It works by stopping your engine while your vehicle is stopped, and it starts things up when you're ready to hit the gas. It's effective at reducing waste related to engine idling, and many drivers enjoy its benefits. In the situation where you don't want auto start/stop to be active, disabling the system is simple. To the left of your steering wheel, you'll see an "Off" button. Simply press that button at any point after you've turned on the engine to disable the auto start/stop feature. This will let you keep your engine on, even during long red lights. You may want it to stay on so that you can maintain a cool climate by constantly running the air conditioner, or you may want your engine to continue to run because you need the power to haul a trailer. Once you've pushed the "Off" button, the system will remain off for the duration of the ignition cycle. At any point, you can reactive it by pressing the button again. When you restart your vehicle, everything will go back to the default setting in which the auto start/stop feature is active. Note that there are certain conditions in which the auto start/stop feature will not engage. This includes when you've set your air conditioner to MAX, you're on a very steep include, you've selected power or snow mode, your steering wheel is turned away from center, your battery only has a low charge, you're in stop-and-go traffic, or your fluids are at high temperatures.

[@normanmacisaac4287]

Could this tool calibrate a tacoma speedometer, after a re gear in the differential?

[@TheCarCareNut]

Unfortunately no. The programming so far is TPMS only.

[@ccasi1019]

Hello can I fix the abs and vsc warning lights on 2007 Toyota Prius the rear brakes doesn’t work the scan tool can calibrate the brakes system I’m need help thank you

[@nanachnanach7643]

I test drove a Honda Accord 2021 and the breaks were much much sharper and responsev then my 2021 Camry (the more I drive my camry the more responsiv the breaks are getting

[@HaniAbusido]

Hi , i like to watch your videos, it’s very helpful I want to ask it this unit works with Toyota Aurion 2015 V6, I’m live in middleast.

[@TheCarCareNut]

Hi! I would head over to Carista website to verify compatibility and see which features work

[@haiho626]

Dear AMD, Will this tool display transmission temperature for 2014 RAV4 and 2018 8 speed transmission Camry? Thanks & God bless

[@TheCarCareNut]

At this no. They recently announced live Data and I haven’t tested it yet

[@mikekmalick]

My 1st gen Tundra it only supports basic ODBII code management