ESP Warning
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Newbie
Joined: Apr 2009
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C240
ESP Warning
I have an 02 C240 that gets intermittent ESP Warning Visit workshop. This error sometimes happens when I first start the car (car still in park), sometimes after driving for 10-15 min (most of the time), and sometimes not at all (rarely). To me, this sounds like a sensor going bad. I have 2 questions. I have seen many posts about this issue, but havent seen how this issue has been resolved. My first question is, does anyone have any advise on which sensor could be going out. Secondly, does anybody know if I take my car to autozone will their machine pull the code since no check engine light is on? Thanks.
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Joined: Jun 2008
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Please pull codes - stops guessing. It could just be the steering angle sensor out of whack - if so park the car on a smooth piece of cement & turn the steering from lock to lock 5 times. This will reset the sensor
Can be speed sensor or if you get unlucky the lateral & yaw sensor or other ESP sensors under the boot carpet. See my recent post in this regard with pics & PNs
Here
https://mbworld.org/forums/c-class-w...ol-module.html
Can be speed sensor or if you get unlucky the lateral & yaw sensor or other ESP sensors under the boot carpet. See my recent post in this regard with pics & PNs
Here
https://mbworld.org/forums/c-class-w...ol-module.html
Last edited by Glyn M Ruck; Apr 23, 2009 at 01:41 PM.
Senior Member
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w203cl
Hi,
your car is from 2002, right? There was a problem with the connector of the ESP module. There was also a repair set avaliable. You can try to pull the big connector of the ESP module under the hood and clean it from oxides. The contacts are made out of aluminum.
I had a similar behaviour and it dissapears completely. Try it.
good luck
C.
your car is from 2002, right? There was a problem with the connector of the ESP module. There was also a repair set avaliable. You can try to pull the big connector of the ESP module under the hood and clean it from oxides. The contacts are made out of aluminum.
I had a similar behaviour and it dissapears completely. Try it.
good luck
C.
Super Moderator
Joined: Jun 2008
Posts: 19,942
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Listen to the post about the aluminium connectors. We have no experience of that in SA so I don't know what the poster is talking about - must have been a US problem. I will look at the TSB list
Senior Member
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w203cl
The plug of the ESP module (under the hood where all brake lines are) is fixed with a bracket. If you open the bracket, the plug is retracted automatically. You cannot do anything wrong. In the first years of the c-class, there was a problem with oxidizing connectors, producing an ESP error in the display. The error code were different. So, thats the easiest way to clean the connector. If the error dissapears, you are fine. If not, you have to go to the dealer.
good luck
good luck
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C240
I finally took the plug off and the top 4 connectors where the plug goes into appear to have a bit of brownish color around them. I tried to use a wire brush to clean them but can hardly get to them with the brush. Any suggestions how to clean that stuff off the connectors? Is there are type of cleaner that would work best?
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Senior Member
Joined: Apr 2009
Posts: 317
Likes: 49
w203cl
I finally took the plug off and the top 4 connectors where the plug goes into appear to have a bit of brownish color around them. I tried to use a wire brush to clean them but can hardly get to them with the brush. Any suggestions how to clean that stuff off the connectors? Is there are type of cleaner that would work best?
I used a cleaner for electronic devices.
Do you still have the error?
Super Moderator
Joined: Jun 2008
Posts: 19,942
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Go to any Autozone & they will download codes which will tell you if any of the sensors that feed the ESP are faulty or buy one of these at Kragen/PartsAmerica & do it yourself - $50
You need a Star or similar to diagnose the ESP itself. You need local knowledge on cost
You need a Star or similar to diagnose the ESP itself. You need local knowledge on cost
Last edited by Glyn M Ruck; Apr 26, 2009 at 03:46 AM.
