Cruise Control: Why Isn't It Working?

[@light12a]

Thank you so much! I was having issues with my w126 300sd cruise control and tried checking the actuator and connectors, but they seemed to be fine. I even did a capacitor swap, but it still wasn't working. However, I followed your advice on checking the speedometer connection on the gauge cluster and found a cracked solder joint. I resoldered it along with a couple of other joints that needed fixing, and now it works perfectly. I will be making a donation to your Patreon as a token of my appreciation.

[@mercedesclassicswithpierre1753]

Great to hear!

[@bradywalters2931]

Pierre you nut. That pin was indeed loose on the back of my speedometer. Thank you!!

[@JoePastorgomez]

Thanks for the Info Pierre

[@daeng637]

good vid thanks, will check my amplifier

[@jesusgilrivas9442]

Hello, excuse my English. I bought the Amplifier used on Ebay and it still doesn't work. What test can I do to find out if what I bought works? Thank you

[@daveyvane]

Thank-you

[@pinzgauernorcal]

i wish you show pictures of what your talking about

[@mercedesclassicswithpierre1753]

when we made our videos today that's what i did. i am going to attempt to incorporate this from now on.

[@stevenbarnett6614]

Thank you for all of your help and information.

[@mercedesclassicswithpierre1753]

you're welcome!

[@justincoot1443]

Hi Pierre. Does this advice also stand for the W210 E320? Can you advise where the various components are located or direct me to somewhere with that information?

[@Johnathan_Waters]

Always rolling your eyes lmao love it.

[@sas8403]

on the w126 will the cruise control stop working if the ABS light is on. MY W126 V8 i have replaced the actuator with a new one and replaced the ecu and still the cruise control will not work, the ABS light comes on after the car goes over 8kmh

[@jesusgilrivas9442]

Hello, greetings from Uruguay. My car is a 1988 w124 300td and the cruise control doesn't work. What do I check first? I appreciate all the help you can give me. Sorry for my poor English. Thank you

[@mercedesclassicswithpierre1753]

Hello, Jesús Gil Rivas and thank YOU so much for your question(s), we want to answer you as quickly as possible. By signing in our Patreon www.patreon.com/thomaspolk page and making a donation of $10 your are assured of a 24 hour email response from Pierre. If you are already a $10 member please mention along with your question.

[@kermitefrog64]

Thank you. That is a problem with my 1981 240d Mercedes.

[@mercedesclassicswithpierre1753]

thankfully its an easy fix...cruisecontrolrepair.com

[@alifrf1049]

Hello! how about '97 W202 C230K? when i activate it the indicator in the cluster/speedometer is active but it didn't hold my speed like it wasn't being activated, is it the same? thanks

[@SuperBranFlakez]

So my r129 cruise control kind of works if I’m going like 50km/h it will stick and sometimes release if it’s uphill. Going 100km/h it won’t work at all. This is the actuator right? It is worn and doesn’t have the strength to pull?

[@lawrencepellegrini2687]

Hello, I've owned my 1995 R129 class SL, with 3.2 liter power for 15 yrs., now I'm reaching on this, the cruise control vanished after I installed the ignition harness, checked everything imaginable and conclude my amplifier and actuator is maybe one in the same (not next to brake switch) located in the Beckmann throttle body, biodegradable wiring to that component has either been replaced or in superb condition. I'm considering living without that beautiful feature. I just need a push in the right direction, what to check, I'd be most grateful, while frustrated at it gets !!!

[@luisfelipecabana1743]

Thank you Pierre, any way to test the amplifier before removal or when removed? Any fix or plain replace? W124 E24v

[@mercedesclassicswithpierre1753]

Hello, Luis Felipe Cabana and thank YOU so much for your question(s), we want to answer you as quickly as possible. By signing in our Patreon www.patreon.com/thomaspolk page and making a donation of $10 your are assured of a 24 hour email response from Pierre. If you are already a $10 member please mention along with your question.

[@gakali123]

Perfect timing with this video. My 201 cruise control simply cuts out at various times. May work for 10 minutes or 10 seconds before dropping the throttle. When it works it works well. Any quick tips on where to look first? Thanks.

[@mercedesclassicswithpierre1753]

cruise control amplifier!

[@ericellquist7007]

Purchased a '80 240 d about a year ago, cruise control has not worked since purchase. In the receipts that came with the car, was one for a replacement speedometer. This is also faulty, at an indicated speed of 40 mph, the GPS on my phone says approximately 32 mph. Somehow, I suspect that these problems may be related... I wonder if the speedometer was intended for an automatic transmission instead of the four speed manual that is in my car, maybe the issue is at the transmission connection/sender... Haynes manual doesn't seem to address it. The four way vacuum connector is in need of replacement as it has cracks in it and as of yesterday, the engine continues to run after the "ignition" switch has been turned off and the key removed. This is probably part of the problem.

[@jaimefuenzalida4788]

Gracias me aclaraste la ubicación del amplificador de velocidad de mi mercedes w124 gracias

[@tonymarru]

Thank you. My 1991 560 sel ‘s cruise control does not engage at all. I am curious as to the cause.

[@mercedesclassicswithpierre1753]

it's likely a bad amplifier. these live under the dash by the brake pedal bracket. Remove the whole bracket- its held in by one 10mm bolt- don't try to remove just the amp.

[@loretapantera321]

mine is not working on the 560sl. need to look at that. tuff spot for big guys down under dash.

[@mercedesclassicswithpierre1753]

only two 10mm screws hold the bracket on...you will be fine.

[@ResponseDigitalMedia]

So if my Speedometer isnt working on my W123 I shouldn’t expect the cruise control to do anything?

[@mercedesclassicswithpierre1753]

Hello, Response Digital Media and thank YOU so much for your question(s), we want to answer you as quickly as possible. By signing in our Patreon www.patreon.com/thomaspolk page and making a donation of $10 your are assured of a 24 hour email response from Pierre. If you are already a $10 member please mention along with your question.

[@ResponseDigitalMedia]

Mercedes Classics with Pierre Hedary Yes I am a patron.

[@527Frank]

How to reach you I wanted to send u a vid on my 380sl advise needed thanks Love your channel I am a newbie to the 380sl and thanks for all your Vids and help

[@mercedesclassicswithpierre1753]

[e-mail]

[@rome3332]

My 124 accelerates when set ????

[@The1804BOSS]

What about the CLK350 W209 2006

[@nabeelel-amir1580]

Hello PierreI have a 1986 w126 (6 cylinder gas engine) with surging. I changed the amplifier (no better). I searched around in the engine bay for the actuator but cannot find where it is. I've seen photos of where it is on an 8 cylinder engine but can't for the life of me identify its location anywhere near the throttle linkages. Can you help me? ThanksNabeel

[@mercedesclassicswithpierre1753]

Hello, +Nabeel El-amir and thank YOU so much for your question(s), we want to answer you as quickly as possible. By signing in our Patreon www.patreon.com/thomaspolk page and making a donation of $10 your are assured of a 24 hour email response from Pierre. If you are already a $10 member please mention along with your question.

[@mercedesclassicswithpierre1753]

its under the intake manifold the surging could be caused by an issue with the tail light bulbs though.

[@nabeelel-amir1580]

I will trouble shoot the light bulbs and let you know the outcome. Thanks in advance.

[@chocolatier9597]

Hi, Where is your auto shop located?

[@mercedesclassicswithpierre1753]

we are located at 1014 Pine St., Titusville, 32796. i can reached at [e-mail].

[@ibraasr]

Is it the same with w140 600s 1998 ?

[@mercedesclassicswithpierre1753]

no, these have a separate module

[@rodschultz5311]

I don’t even think he knows what he’s talking about.