Mercedes Front SAM

SAM stands for Signal Acquisition Module. A SAM module (also called Signal Actuation Module) receives data from sensors, switches, and controllers, and can send data, actuate (activate) components and monitor systems. Mercedes-Benz has been using SAM modules since the mid-90s.
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[@glasser2819]

Thank you Keith for taking us along your ODB2 quest. Part of MBenz complexity is rooted on all these coded CAN bus modules built by 3rd party suppliers for a range of models. Software issues come from lack of real compatibility between modules for untested chassis combinations. Front and Rear $1,500 SAM's love to burn up once the china relay contacts fail and blow internal links... some internet shops can fix 'em on the cheap for diy'ers. This way no replacement coding is necessary. Happy new year for 2020! 😊

[@talalalhadidi4940]

Upon my experience I recommend to clean front SAM with alcohol every 5 years , you will find salt from moisture which disturb It's normal functioning

[@iRepairAutos]

Correct, especially if the vehicle is in very humid salty areas (near the ocean)

[@talalalhadidi4940]

I'm living in Iraq (no sea ) the front right turn signal stay on because of salt on front SAM 😁

[@iRepairAutos]

You can remove the SAM and clean it with electrical contact cleaner. Then reinstall.

[@james24vegas]

hey Keith, i have 06 slk 280 and im looking to buy a scan or diagnostic tool are you able to do everything you want to with yours, im not looking to spend to much. i need one to reset the key fob and other things.

[@STILLKINGSTON73]

Hello sir.. I have a 2011 mercedes benz s550 w221 and Just got a error message on my cluster saying please check del day time running lights.. my lights are Good and don't know what to do.. don't know vwhy this error.. please help.. or anyone Thank else had this problem.. Thanks in advance.

[@illwills]

Good video Keith.. I guess the next time I buy a used car and take this with me. I need to invest in this handy gadget. Happy new year my friend. Thx for your efforts.

[@iRepairAutos]

Thanks illwills! Yes, these SAMs store a lot of data that can steer us away from buying vehicles that should be avoided. Keep in mind that cars free of DTCs are also suspect and should be driven a bit to see if any dtcs appear. Run all the lights, HVAC, cruise control, and the other devices to see if dtc codes appear. Happy new year to you!

[@brilliandi]

Hello from jakarta indonesia. I drive 2009 ML350 W164. Suddenly my lowbeam only lights up at leftside only, the highbeam only lights up at right side only, and the foglamp only lights up at right side only. Is it possible that my front sam broken?

[@LalaKhan-dx9iv]

Hi. I have 07 gl450 it has some electrical issues. Signal light whipper radio backup camera not working. And mainly. OBD2 connecter not workin. Please help

[@derricksteenhard4399]

Keith!!! I have a 2008 ML320 CDI, I got the red battery light while driving and was able to get it home. I replaced the voltage regulator (alternator brushes) and fixed my problem. Issue now is my front wipers do not work. Any suggestions would be of so much help. Thank you.

[@boandersen2895]

2009 W164 ML63. Headlight washer pump is fine. Zero volt on connector to pump when activating it. Where is the SAM/Fuse/Relay controlling the pump, please?

[@eddiethomanie2548]

Hi i would lile to find out if the sam from a petrol version vehicle be used on a diesel version vehicle

[@Nrsouth12]

My passenger side fuse keeps blowing in my clk w208 what could be the problem?? My window don’t work unless I disconnect battery

[@tiller98]

HI, I am having issues with my ML350 164. Both low beam stopped working. Fuse are ok. What can be wrong?

[@scldvi]

Hi, i’m having the same low beam issue as you, did you find out what it was?

[@daNeterAUsaru999]

I’m having issues with my ML 63AMG. I get a check engine light only in the summer months when its hot. During the winter months it goes out and I never see it until its warm again. Ran the diagnostic tool on it and it always gives a faulty fuel rail sensor replaced it and that did not fix the issue. After having the car for some years now I realized that the engine coolant fan has never come on in the car. After doing some research there were some solutions I think are contributing factors. Either the module for the fan is bad or there is a faulty connection from the relay to the fan or the SAM module may have a blown fuse. I am seeing that the SAM is supposed to be a non- serviceable part but I saw.a video for which you can take it apart and replace the fuse if it is blown. Other options are remove and replace the SAM or remove and replace the fan and the motor that runs it. Would you have any other suggestions?

[@javediqbal-bd8sf]

Thank you Keith dear friend, your video is a very, very helpful and you make a step by step so nice. I like your style easy way and my friend. I have a 2010 Mercedes-Benz ML350 4 Matic. I have an issue my radio come on first time when I start after go to Anti-theft system please if you know help me out I really really appreciate l'll send you description how to display screen. Anti-theft protection activated.

[@mechanicmeals8553]

Hi , I’m having issues with my car 2002 c230 kompressor runs and drives but got water in the Sam when washing the car and now the windshield washers and headlights are on constantly like power is being distributed and bypassing relays , wiper arms stopped working and brake lights are on after starting the car along with the radiator fan , I dried out the front Sam thoroughly and inspected it for corrosion and reinstalled and issue persists any ideas??? Or do you have access to the epc to cross reference my vin and Sam module so I know if my second cars Sam is compatible ???

[@michaeldegraff1401]

Hi Keith. My mercedes c240 s203 is having an issue with a driver side low beam head lamp is out but the high beam works. I recently tried to install h7 leds and noticed the led low beam wasn't working. Any help would be appreciated 🙏🏽

[@viciousvick5131]

What if the Sam unit is bad what would be the reading can anyone help please

[@iron2468]

Great one Keith!!

[@iRepairAutos]

Thanks iron2468

[@samuelmingo7155]

Hey Keith i have a 2006 e350 that's giving me the blues. Driving home from vacation last week I ran into a heavy rain storm. The car went crazy the dash said display malfunction and various warning lights began to flash. The biggest issue now is that i have a linking error with my OBD Please advise

[@allaboutthedavids]

What would we do without you!!! Great video!

[@iRepairAutos]

Thanks my friend. May your Mercedes run beautifully forever. 😎

[@grayflight9424]

Great video i have w203 2.5 v6 on 2005 car changed the bettery and now have no instrument cluster working could this be a SAM problem Mercedes? any ideas please.

[@demarcusfells8384]

I have no power on either side of fuses on my sam unit that controls radio,ac etc

[@joseportillo1124]

I have question.. i have 08 mercedes gl450 the fan is on high speed the turn light not workind the horn not working this is the sam issue??

[@frankiequintero4640]

Same issue here did u resolved this? Thank u

[@LalaKhan-dx9iv]

Hello. Can you help me locate front sam unit for 07 gl450 please help

[@vincentbutler4886]

Great video, Got 9006 fault code for a/c compressor problem. I was told that mb bulletin suggests checking front Sam! I don't have a icarsoft scanner. Have you seen anything relating to a/c shorts on circuit a9?

[@tjaber1990]

Can u show how to put cap back having hard time .?

[@mannycweiss3053]

brains, looks, this dude has it all....

[@kenmcintosh3705]

Hi Keith, front drivers door lock switch not working. Changed switch and window control unit and still no joy. Is there anything else to do please?

[@Mminnehoma]

No SAM diagnosis, only scanner advertising

[@burnermaster5375]

If you had a front headlight out, would it tell you in the scan tool and would you have to reset it after you replaced the bulb?

[@iRepairAutos]

Yes it would tell you in the scan tool. Dtc codes don't trigger check engine lights. But you can still and you should clear the dtc code.

[@burnermaster5375]

@@iRepairAutos so after replacing the bulb, you must clear the code for the sam to turn on the nee bulb?

[@burnermaster5375]

Would the new bulb work without clearing the code in the SAM? I tried 2 new bulbs and both didn't work. A trip to the dealer and 10 minutes later it was fixed, they said a new bulb was installed. I'm thinking that it has to be reset somehow.

[@burnermaster5375]

@@charliemaffitt7047 I didn't need the tool. I just stsrted the car, got the headlight message, turned the headlight switch off then the car off, replaced the bulb and stsrted the car and turned the headlights back on. Voila! I have gone through 3 passenger side bulbs and 1 drivers bulb in 1 year though. Kinda leary about putting expensive bulbs in there. The light outputnus pretty terrible too, have been wondering about LED upgrade but would the computer see those? Just another MB question lol

[@marisayoung797]

I purchased this i980 after watching this video. I can't get my wipers to work. I've changed all the little inexpensive parts. Trying not to change the SAM. Any suggestions?

[@iRepairAutos]

Any faults coming up in the front SAM? The motor is controlled by a relay, there is also a fuse. Check that they are good and that the motor is receiving voltage. You may need a volt meter to measure the voltage.

[@marisayoung797]

I've changed fuse, relay and the wiper switch. The current is good. However, the code reads: 902A. The component or the signal line to the component F58KB ( wiper on / off relay) has short circuit to ground. Any further assistance would be appreciated. Thanks in advance.

[@iRepairAutos]

You have a short in the electrical connection between the wiper motor and the relay/fuse/switch. The motor itself could be shorted out to ground. Can you remove the wiper motor and apply 12 volts to it to test it?

[@iRepairAutos]

Can you send me a picture of that screen on the icarsoft?

[@marisayoung797]

My i980 that I received only goes to 20 not 26 so I can't get to the area to scan the SAM. The codes that I sent you came from a ETHOS TECH SCANNER. And yes the wiper motor has been tested. I replaced it along with fuse and relay.

[@mygodisable2]

Hey Keith. Another super video. Pretty good tool for diagnosing problems. Looks so simple & easy when you go through it. Just wanted to let you know that I received my t-shirt. Very, nice. I posted a message on the previous video and I just wanted to thank you again for it. Do you carry this t-shirt in larger sizes? And how much? Thanks again Keith.

[@iRepairAutos]

Thanks Deborah! Glad you got the shirt quickly. I'll try to get some of those shirts in larger sizes. That was the last one that I had.

[@mygodisable2]

@@iRepairAutos 0kay, I'd like to buy it to give to my mechanic. Let me know when they are available. Thanks.

[@stillyooneq]

👍🏾

[@eddiethomanie2548]

Hi i would lile to find out if the sam from a petrol version vehicle be used on a diesel version vehicle