Sgtspitter101

I need some help diagnosing some abs codes. I have C1529, C1120, C1140, C1314, C1100, C1401.

khomer2

What exactly is the issue (other than the saved codes) - please elaborate.

Sgtspitter101

I have the abs light and the 2 other lights on also. No symptoms thankfully.

khomer2

What other 2 lights on are you referring to?
We are not going to guess at a possible resolution if you cannot provide clear answers and elaborate on your issue.

Sgtspitter101

My bad. The traction control and stability control lights are on. No symptoms, just the codes i have provided.

khomer2

Any other recent past issues that you know of, or changed, that you haven't mentioned yet.

Sgtspitter101

I just recently aquired the vehicle with these issues. It had been parked for a few months with a dead battery. I tried the steering angle relearn and also reset the codes with a obd2 scanner but they come back within 5 seconds after reset. Would the yaw sensor set off all 6 codes i provided? Or the wheel speed sensor?

khomer2

Ok, now we have a better picture of the recent past.

Did you replace the dead battery?
Checked all four shoes and the brake linings and sensors?

Turning the steering wheel end-to-end is correct to re-calibrate the steering angle sensor, AND you still have to drive the suv so the wheel speed sensors send a signal to the CU. Dont have to drive it too far a distance.
This doesnt sound like a BLS issue, but it wouldnt hurt for you to swap in a new one if you like - they are cheap.

Read here and here

Maj. Dundee

Code C1401, with all three lights on, means that the brushes in the ESP pump motor are worn down.

https://www.benzworld.org/forums/w16...ml#post4229913

Sgtspitter101

Is there a way to jump the motor off the battery in place of the relay?

Maj. Dundee

No because the brushes in the motor are worn down.

Try swapping relay K25. If that doesn't work then it is the brushes.

IgorE350

I agree its the brushes or check the wire harness. I had some ML cars that had bad brushes some i had that few wires were broken few inches from ABS pump just fallow wires 12' from ABS plug and just check them very good. Both are fairly easy fix if you know what you doing. brushes about $25 or so . good luck

mihir_d

How many miles on your ML? ABS Pump brushes will wear out over time. You can swap out your ABS module with a rebuilt unit, if you don't want to open and work the ABS motor. Swap would cost around $400ish..

Sgtspitter101

It is a 2002 with 207k miles. It is due for a few things.

mihir_d

My ABS motor brushes went out st 220k miles. It will not hurt addressing the ABS motor. The brushes are at end of life by now.

Sgtspitter101

I have an update. The last 2 or 3 mornings only the bas/esp light comes on until i drive a few feet and then the abs and ets light pop up. Could this be the yaw sensor maybe?

jay4usc

Anyone in Southern California in here know how to replace the brushes? I can take out the motor out of the car but I’m to confident on replacing the brushes plus i don’t have the tools and work area. I don’t paying someone to replace the brush for me.

Please email me if you are interested jjs2013@icloud.com

jay4usc

Mr. Dundee. Thanks for the info on the relay. I just tested my problem and it’s the relay that I need to replace. I’ve been searching online and can’t seem to find the Siemen brand which is what is what it’s in my car. Do you have any suggestion on which brand and where’s the best place to purchase instead of the dealership? Thanks for your help.

Maj. Dundee

Right here.

jay4usc

Thank you sir

Maj. Dundee

Any time.

jay4usc

For those looking for someone to rebuild their abs pump, I found a company in California that rebuilds them. All you have to do is mail in your old one and they charge $249 to rebuild it. Below are links to their eBay add and also their company website.

https://www.ebay.com/itm/REPAIR-KIT-...QAAOSw3wVahIjU


company name= Module Repair Pro Inc
https://www.shop.modulerepairpro.com

mihir_d

I got a rebuilt unit from them and returned my worn out ABS pump unit for a core credit. I can vet for them. 2 years, since swap, my truck has had no ABS codes come anymore...