M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

Another BAS/ESP,ETS,ABS lights all on

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Old 09-29-2009, 05:23 PM
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Another BAS/ESP,ETS,ABS lights all on

I have searched the threads but haven't found a solution. I know this has been talked about alot but wanted to see if anyone has had a situation like mine.

I have a 2001 ML320 and all 3 of the lights come on in, although if my car sits overnight the lights do not come on until I shut it off and start again.

Could this be a bad battery? I took it to O'reilys and they tested the battery and claim it is fine.

I have had the brake switch replaced many of times but on my car when it is the BS just the BAS/ESP light comes on and my brake lights stay on the whole time.

I am leaning towards my battery since this started happening when I cam back from a 2 week trip and my car was dead. Had to charge it up to get it started and then the next day when I drove it they came on.

Thanks for any ideas! :thumbsup:
Old 09-29-2009, 05:52 PM
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C240
I've been having the same problem. All 3 lights on my 2002 ML320.

The lights come on after I hear a buzzing for 1-2 seconds from the front left(abs pump?)

The lights are always cleared when I turn off the car and turn it back on, but most often, they come back on sooner or later.

I cleaned up the dirty wheel speed sensors, but the lights are still coming on.
Old 10-08-2009, 01:20 PM
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It could be a weak battery that's causing the issues. When the last time you replace the OEM battery? If it's more then 3 years then time for a new one. Also have you tried to replace the brake switch?
Old 10-21-2009, 11:33 AM
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ml320
similar problem with mine 1999 ML320!
all 3 of yellow lights come up (ABS, EPS, ETS), also the red in colour brake with symbol ! pop up with short Beeps sound, it only can stop when the vehicle become stationary or engine turn off. Some friends said that it may causing by one of the following reasons:-
1)fuse related wrong touch (due to humidity or older)
2)hydronics pump wire / switch loose
3)hydronics pump failure
4)ESP, ABS, ETS Electronic control computer sensor failure.

any brother has comment or ideas?? ~Anltee~ from Hong Kong
Old 10-21-2009, 11:48 AM
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Went to the dealer and they said that it is the BAS control module.

They want $1400. Anyone ever installed this part on their own?
Old 10-21-2009, 05:58 PM
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ML 320 2002
This may be relevant
Click herehttp://www.peachparts.com/shopforum/...d.php?t=163247
Old 10-21-2009, 09:39 PM
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ml320
Wooo... Expensive

Woo... can`t believe it cost about $1400-CA exclude labour charge?


~Anltee~


Originally Posted by zmanzbo
Went to the dealer and they said that it is the BAS control module.

They want $1400. Anyone ever installed this part on their own?

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