I am in the same situation with these lights now. All three are on and even when restarting the car they don't go off. So where can I find the instuctions on this procedure.

Thanks

ML w/ ABS/ETS lights on
 

In which procedure do you have an interest? There are a few outlined in this forum thread from troubleshooting and repairing a loose terminal pin in the control module to rebuilding the control module, to removing the ABS hydraulic pump and repairing a wiring harness.
Thanks,
Ken

Well I thought to check out the bad solder joint in the ABS pump first, but it seems that the loose terminal pin might be little easier. Always try the easiest first, right?
It wouldn't be bad to have both so please advise.

Thanks in advance.

Procedure
 

Dear 00ML320,
Please check out the 8/31/2006 post by JFREEZN. Subject line is "ABS and ETS lights on/ I found the problem/LONG". Should help you go through the troubleshooting procedure.
Ken

I did read his post but he was relating to some pictures, so I thought that there might be a file on this. His procedure is clear for some people but I think I might need little more input on it .
Exaple: what is the PC side of the board?

Hi guys,

I also have this problem on my ML320 2001 but I don't know where to locate the ABS module. Can you please give me some guidance? Thanks.

Hi All,

regretfully, I'm combating a similar problem on my 00 ML 320. Lights BAS/ESP, ETS and ABS all on with ABS pump also running. This started yesterday even though I changed the brake light switch about a week ago. What's even more strange is the ABS pump came on and remains running even after the car is shut off and locked!!! I had to disconnect the battery to get it to turn off.

Last night I inspected the ABS wheel speed sensors at each wheel, checked wires to/from and also removed and cleaned the magnetic pickup sensors and hub surfaces (where the sensor reads from). These contacts get pretty dirty on the sensors. Put back together and restarted engine, performed lock-to-lock steering sensor reset and all lights off (and ABS pump) and stayed off during 15 minute test ride.

JFREEXN Jim, any chance you can post the photos you had referred to in the beginning of this post along with the great write-up? I will send you a PM with my e-mail just as backup. These would be very helpful if you could send them to me please as I do not believe I am out of the woods yet. Will test ride again today, is raining nicely and believe the water has something to do with the problem or possibly the circuit board is the source.

Thanks!
Mike

I sure would like to see some pics too. I tried the procedure described above but it seems that my ABS unit is somewhat different from the one they have. I have an integrated two pin connector that goes from the module to the pump, which can only be accesed when the module is off. The two pin connector seemed little burned out. So I am currently hunting for an used replacement unit. All three lights are still on.

cleaning the ABS wheel speed sensors fixed the problem for me. clean the sensors and the hub from where the sensor reads.

I'll give it a shot this week, thanks.

ABS problem question
 

Thank you all for the advice! I was about to order an ABS control module for 2002 ML 320. However after reading maybe I should check the wiring first.

Only issue we have that has not been duplicated is that at some points our ABS pump will start for no reason. The dash lights come on and the pump continues to run even after the car is shut off! The only way to stop is to remove the relay, after which we are good for a few days untill it does it again.

Has anyone seen this???

Thanks in advance
Ray

Can anyone describe the lock-to-lock steering sensor reset please? I plan to wirk on cleaning all the sensors this weekend.

Thanks
Ray

Hi Salleerd,

In order to reset the steering sensor all you need to do is turn the steering wheel at maximum in both directions.

jfreezen in Phoenix,

You just saved me some bucks!!! The fix is very easy to follow. Removing the windshield washer reservoir is a must if you have the 4 6-point screws frozen. Using a 4mm socket helps in taking it out.

Thanks!!!

otil2001

Same Problem in model 2001
 

Hi Jfreezn,
Thank you for your time you took to post such a comprehensive troubleshooting guide. I have a similar problem with my ML 320, model 2001. The three lights BAS ESP, ETS and ABS appear and today I felt some problem with the application of brakes too.
The different thing is that these three lights are not ALWAYS on, sometimes they disappear and most of the times these remain switched on. What does that mean? does that indicate that the problem is with switching of K25 relay or something big?
Waiting for your kind reply !
Thanks
Khurram