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Old 01-20-2019, 10:21 AM
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Join Date: Jan 2019
Location: Netherlands
Car: E70 LCI
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Default E70 problem after changing FRM3 module

Good afternoon,

My FRM3 modules is probably faulty after a major electronics error: they tried to jumpstart the engine with the polarity of the cables reversed. It throws a lot of errors:

- power window cluster lin bus failure
- dimmer potentiometer failure
- front door contacts failure
- rear door contacts failure

So I bought a replacement (second hand) FRM3 E70 AHL module, and changed the VIN number to the VIN number of the car. I also copied the VO from the CAS to the FRM module.

After that I tried to program and code it with ISTA-P, and the error in the attachment showed up (Unexpected control modules in the vehicle).

This can mean that the old VO is still somewhere present on the FRM, but when I read the VO with NCS-expert, it reads exactly the same as the CAS-unit.

Programming and coding is possible with WINKFP and NCSEXPERT but not with ISTA-P. At the moment the 'new' FMR3 module throws the same errors as the old one, which is very strange.

There are now two options which can be the case:
- The FRM module is not correctly coded
- The FRM module is allright but all the other components are faulty. I measured the dimmer failure error in detail, but the dimmer potentiometer is perfectly working.

Anyone has an idea what the next step can be?

Thanks in advance and best regards,
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