BAS ESP ABS warning light - Mercedes-Benz Forum
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#1 (permalink) Old 12-12-2008, 03:17 PM
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Post BAS ESP ABS warning light

*****FIXED****

Yaw sensor was kaputt




Hello

I own a Mercedes Benz (w210 WDB2100821X017251) E320 4matic 1998 model

Two weeks ago I got three errors in the dashboard info screen BAS, ESP, ABS and two warning lights in the instrument cluster. This only happen when I start driving in the morning. If I turn the engine off and restart it then it will stay off.
But now it´s on all the time. When I start my car, switch the light on, press on the brake pedal and put it in D/R nothing happens. But when I release the brake and the car starts to move just a couple of feet then the light´s pop up.

This is what I have tried and done.

1st disconnect the battery (by the way new battery installed 1 month ago)

2nd tried the steering wheel trick, start the car turn the steering wheel fully to the left then to the right then turn the engine off.

3rd Bought a new brake switch and install it

4rd Visit the Mercedes Benz dealer and got it through star-diagnostic test.
There was like 20 codes (the car had a dead battery). I only got to see few of those. ESP yaw sensor, something about low volt and parktronic.
The mechanic told me it is the yaw sensor to blame. OK I then ask what is the price of one yaw sensor. He told me it cost roughly 2000$ without the labor.

OK I´m not sure if he found the right sensor in the EPC programme. This 2000$ sensor was named acceleration sensor in the EPC is it the same as yaw sensor?


Here is some pic of the sensors

This is named acceleration sensor in the EPC that I have, the part no is A 012 542 04 17 I found it only cost 180$ on German eBay. It is located behind the shift leaver


Here is the turning rate sensor the part no is A 00 542 65 18 it cost 150$ in UK. It is located under the driver seat under the carpet.



Can some one advice me which one is the yaw sensor and if I should replace the sensor myself?

Best regard and Happy Holiday's

Last edited by jimmysnow; 01-02-2009 at 03:45 PM.
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#2 (permalink) Old 12-12-2008, 03:26 PM
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I'm not sure that this is the piece that you need, but "yaw" would be turning rate and not acceleration.
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#3 (permalink) Old 12-12-2008, 10:19 PM
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Has

anyone ran a voltage test of the charging system and the battery under load and no load?
Low voltage will trip those lights.Steering wheel angle sensors rarely fail.Clear all the codes and then since you have the new battery ,see what codes come up again.Test the brake light switch,you may have gotten an old style from before the upgrade.Did you get it at the dealer?


00-02 drivers side self dimming heated mirror
17mm special spark boot tool
O2 plug and play sensors
16mm spring loaded swivel spark socket
trans dipstick and magnet


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#4 (permalink) Old 12-13-2008, 10:28 AM
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Originally Posted by ohlord View Post
anyone ran a voltage test of the charging system and the battery under load and no load?
Low voltage will trip those lights.Steering wheel angle sensors rarely fail.Clear all the codes and then since you have the new battery ,see what codes come up again.Test the brake light switch,you may have gotten an old style from before the upgrade.Did you get it at the dealer?
Hello and thanks for your reply

No I have not tried the voltage test. Yes I bougth the brake switch from the dealer. It is very strange that I got one without any packageing and it have the same part no as the old one.
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#5 (permalink) Old 12-13-2008, 02:22 PM
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They

may have passed an old stocked one onto you.Call the dealer or another dealer and check for the upgraded part number.And then go check that charging system operation.


00-02 drivers side self dimming heated mirror
17mm special spark boot tool
O2 plug and play sensors
16mm spring loaded swivel spark socket
trans dipstick and magnet


Mercedes Benz Lyrics
Artist(Band):Janis Joplin
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a Mercedes Benz"
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#6 (permalink) Old 12-13-2008, 10:04 PM
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i have similar experience before
just replace brake light switch, and everything had been fine for 6 months
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#7 (permalink) Old 12-15-2008, 01:30 AM
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Originally Posted by ohlord View Post
may have passed an old stocked one onto you.Call the dealer or another dealer and check for the upgraded part number.And then go check that charging system operation.
I call the dealer (here in Iceland we only have one dealer) and he told me they only have brake switch same that I bought and there is no updateing on it.
I´m gonna try the voltage test now. The battery minimal is 10Volt when starting rigth?
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#8 (permalink) Old 12-15-2008, 11:56 AM
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I tired the volt test and found out the battery is fine. I plugged power starter and still came the BAS, ESP and ABS.
I then found the turn rate sensor and discover ln water under my carpet. The sensor had corrosion on it so the sensor is wasted. Then I call the MB dealer to check how much it will cost to order new one. 5000$ was the answer, I´m never going to buy a sensor that is half the price of the car.

Thanks for the info and I´m now going to order this sensor from starpartz.co.uk

update
got the sensor and light is now out and all is working ASB and EPS.

Last edited by jimmysnow; 01-02-2009 at 03:48 PM.
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#9 (permalink) Old 09-11-2009, 05:56 AM
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Guys.

I too have a '98 W210 E320 Avantgarde Saloon with a similar problem and was wondering if you could help with some advice.

No running problems, she runs like a dream around town and on the highways. She will cruise all day around town and up to 65Mph or so on the Highways - BUT, run her over 65Mph and after a couple of minutes I get the warning on the dashboard that the ABS has failed and then the BAS and ESP has failed too. I can reset the warning but the warning lights in the console remain lit. If I pull over and shut her down and then restart the engine the lights remain on for about 30 seconds after she moves off and then they just go off....

I am really confused.

Any suggestions as what is causing this and more importantly, how do I stop it - and no, I don' want to stay below 65Mph for the rest of her life....

Regards
Kev
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#10 (permalink) Old 02-15-2010, 09:15 AM
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I own a 2005 E320 Sedan and I have had a couple sensor issues with it since I bought it 2 years ago but they were fixed under my CPO warranty.

I now have an issue where the ABS,ESP and Brake light on the dash come on and it drives like there is very little power steering. When I shut the car off and it sat for about an hour it cranked up and before I drove away it had power steering. Once in drive and I moved 30 feet the lights came back on and I lost almost half of my power steering.

Any help would be great since I am out of my CPO warranty.

Thanks!!!
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