Merc A150 EPS ABS lights on

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Tue 31 May 2022 09:51
Merc A150 EPS ABS lights on - Vinnychoff

hi I am helping a friend to fix his car, we changed the fuse body as the water had gone into the fuse box. this is replaced.

trying now to fix the eps abs lights, i can clear them with my autel obd but they come back up as soon as i move the car, i can see all the wheel sensors are working, i have cleared it a couple of times but no success, i get two main obd faults

4580 Component 'A7/3 (Traction system hydraulic unit)' loose contact in voltage supply
and
supply voltage at control module esp and brake assist system bas control module n47-5

its a 2006 a150 w169 031. petrol model vin WDD1690312J326798

the car drives ok but the speed limiter goes on. Brakes seem fine though? i took off the front wheels and cleaned pads.


thanks in advance
Vincenzo

anyone help with what to do and test?

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Tue 31 May 2022 11:36
Merc A150 EPS ABS lights on - elekie&a/c doctor
It’s possible you may have lost a power supply to the abs module. Check pins 2, 3 and 28 for a good supply.
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Tue 31 May 2022 12:35
Merc A150 EPS ABS lights on - Vinnychoff

Thanks, do you mean to take the plug off under the bonnet to the unit and then check voltage to each pin? thanks Vincenzo

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Tue 31 May 2022 12:37
Merc A150 EPS ABS lights on - elekie&a/c doctor
Yes , that’s what you need to do.
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Fri 3 Jun 2022 16:27
Merc A150 EPS ABS lights on - Vinnychoff

Hi, thanks for your help. I cleaned the 40amp fuses and all connected with the abs system. Took them out and reset.

Checked the car and no abs warning lights? took the car for a 40 min drive, no lights. 20 miles and no issues. Not sure if this is the fix as it seems to easy.

I will keep checking every day and see how it goes. Thanks for your help.

Vincenzo

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