E39 Abs fault

[davie1986]

So I have the dreaded abs fault in my 530d
Previously I had lights on the dash but I replaced the abs sensor passenger side. Built the car back up took it a run and the ABS is kicking in constantly but no lights on the dash. Then when you stop and leave the car idling the abs light comes on.

[StephenVA]

Scan for codes.... Sensor? Module? Who knows with out a scan.. Its all internet guesses otherwise.

[Coupenut]

My 99 E39 touring exhibits the same symptoms. The module has been confirmed bad as is probably the case with your car. In my case the module cannot be repaired so I have to replace it, but in my experience this is a somewhat unusual situation. Unfortunately module failures don't always result in a fault code being generated so the actual issue can be somewhat difficult to diagnose.

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[davie1986]

Sorry should have noted there is no codes on the car now when driving.. When you leave it to idle the code is for p/s front abs sensor which I've already replaced. Who repairs the abs units?

[Chedley]

So, what reader did you use to read the error codes ?
If the ABS light comes on, it leaves an error code. What is it ?

[davie1986]

I used inpa to read the codes. When the light came back OK the code was again stored for front left hand abs sensor. Sorry for the confusion

[Chedley]

Well, then you have a defective ABS sensor, on the front left side of the car. Did you install an oem abs sensor ? or a cheap after-market one??

[StephenVA]

Repair
BBA Remanufacturing Inc
300 Myles Standish Blvd
Taunton, MA 02780
United States
1 508 822 4490
Fax 1 508 822 4491
us-sales@bba-reman.com
Website: www.bba-reman.com

[mattmar1]

try swapping the front sensors left <->right and see if the problem follows. if it does, its the sensor. if it doesnt, but stays on the same side, its either the chassis harness or the module.

[E39 Newbie]

Concerning module repair, I just recently used Module Repair Pro in Van Nuys, CA. I had the trifecta, and the code showed ABS Sensor Open Circuit, FWIW. For $99, plus shipping, they rebuilt it and all the codes went away immediately after installation. ABS works fine and I'm really pleased.

[Coupenut]

Plus one for BBA Remanufacturing. I recently sent my module to them for repair. They called to let me know that they weren't able to repair the unit. I was offered the option of purchasing a replacement unit from them, or having my unit replaced and my money returned.

I thought that was a very honorable offer to make. I'll definitely use them again if the need arises.

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