Siska Frey

Hi all,

I am Frey, 28years, woman and new to this forum.

I just bought used W204 C300 (my first Mercedes), the condition is very good and almost 40.000 KMs.
The problem is the Cruise Control is not working, no any error messages, I checked the car to authorized dealer and they scanned the car with no errors also.
All the ESP, ABS etc are not errors

But when I push the CC Stick, the scanner is communicated with the CC but it can't active.

Nothing showing in the MID that indicated the CC is active nor the limit when I push the stick.

After 6 hours of working, we dont have any ideas how to fix this.

Here is the video:

https://www.youtube.com/watch?v=vHPz...ature=youtu.be

Any help would be very appreciated.


regards,

Frey

michail71

I just picked up my fist Mercedes too. I've found the CC system one of the simplest to use out of any car I've driven. What year is the car?

That stick looks completely different on my car. My CC control is a shorter stick below the turn signal/wiper controls.

Zozzle

Can I assume you have read the manual on the CC?

My 2013 C350 cruise is on a shorter stick below the one in the vid. And I'm sure CC doesn't operate when the car isn't moving above x km/hr. You just have the engine running. My car isn't here right now so I can't check this.

If you're at speed and using the right stick and it doesn't work, has the fuse been checked (assuming is has a fuse).

Siska Frey

Thank you for reply.

My W204 is 2010 year.
I did check to the authorized Mercedes dealer for service and they cant find the error.

I tried the other W204 cruise control and the display is change, waiting to set input of the speed (the car is not moving), but mine is nothing happened like the video's showed.

Thank you again.

michail71

I'd make sure the dealer got that figured out. Even if they had to replace the whole system it's on them to do it under warranty.

Our model years are different. What you do in the video would activate my window washers

rander

Before 2012 the C class had the cruise control shaft mounted above the turn signal/multifunction shaft. In 2013 and after the multifunction shaft was moved to the top.

Siska Frey

Thank you all.
Tomorrow i will go to service again and i will update.

Alfadude

Does the cruise control work when you try to activate it at speed?

Siska Frey

Doesn't work, no any respond on the display.

bop11

In your video you pushed in and a yellow light came on located on the stick. You turned off the light before you tried the up and down. I have not seen this light on any of the MB's I have driven, nor do I find mention of it in any of my manuals. Where is this car? Again I would try it with the yellow light on.
I have heard of people having trouble with the switch module in the steering column. Since the diagnostics do not report a code, and the fuse is good, suspect this module is not sending out a signal. That is why the computer doesn't report a code, because it doesn't know you tried to set the speed control. With 40,000, a dealer should fix this under the new car warranty.

Siska Frey

The yellow light is the limit mode when I pushed the stick.
I mentioned the mechanic about the steering assist also, but he said it is not.
He is thinking about the software, now he is trying to update the car software and he has to download from MB Germany.
I really love this car, the engine, stability, comfort are superb.
Only the sensors are very scary and expensive for service and parts.
Now I am at the MB workshop and I hope they can find the error.
My ex car was Toyota Mark X, the power and engine is also very good but this C300 is more superb.
I sold it for this C300.
About the warranty, I think no warranty anymore? Or still warranty? Think of the C300 is almost 5 years old.
Thank you Bob.

michail71

Where are you located? I'd guess somewhere in Asia given the Mark X?

In the US most car places have at least a 30 day warranty on sales but they can be problematic unless pressed.

Any German car has expensive scary parts, even VW . But they tend to be well built for the most part.

onekmeters

I can tell you my 2012 C300 will only set cruise when in motion and I believe it is above 35-40 MPH as well. If just sitting it does nothing and it wont set at low speeds either. This is true of most all cars in my experience, not just MB.

Siska Frey

I agree with you, comfort and safety vs price also

Siska Frey

I tried also to drive at the above 60km/h and nothing happened.
One a little problem is, I think my wheels have a very little misalignment, may be around 5 degrees, can it be the problem?

Siska Frey

Is it possible the battery?

michail71

Doubtful, but you never know with electrical problems. The alternator should be providing enough power.

Siska Frey

Changing SAS with another similiar car and my SAS is working to the other car and the other SAS is not working to my car, so It is not SAS problem, it is save me from usd.600.

Tomorrow they will check and swap the battery from another car before I decide to buy new battery.

They make a case tips to Mercedes is Germany, let we see what is the suggestion.

I mentioned about the alternator also, but they said it is fine.

Siska Frey

btw, i found one clue, when I pressed the ESP OFF button, there is no any sign on or light on on the dashboard display. I think it is the problem, I cant turn off my ESP by the button, I think it is the problem, anyone has any experience about this?

michail71

Strange. On the newer C-Class the ESP is turned off through the menu system.

I wonder if someone had replaced the steering wheel and not hooked things back up properly?

Perhaps they had changed out the wheel to something else then put the stock parts back on without doing and module recoding? Just grasping at straws here. I don't know as much about these cars yet.

When people swap out steering wheels sometimes switches and things don't work until the computer gets coded properly.

onekmeters

I think you may be on to something, it may be a cluster issue. Some electrical problems will not cause a code for the dealer but I am suprised they didnt look deeper.

Sorry but no other ideas to share.

Siska Frey

It is the ESP Switch!!
Now waiting for the part.

Thank you all.

michail71

Nice detective work!

I'm surprised there were no codes or ESP warning light. I wonder how the CC and ESP are interconnected? I guess if you lost traction the CC should disengage.