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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > BMW E92 2007 Driver Window Problem



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      01-13-2026, 05:20 PM   #1
adam.keel
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Drives: E46 323CI | E92 328i | E60 528
Join Date: May 2022
Location: Guatemala

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BMW E92 2007 Driver Window Problem

Good day everyone,

i have a BMW E92 328i 2007 and my problem is as follows.

the driver windows doesn't operate via the master switch and basically my windows master switch doesn't operate.

below is the story and everything that was done.
  • when the car was first purchased the driver door harness was spliced and a generic button was installed, where the window was operating with a series of relays "picture attached"
  • i bought a used driver door harness, rewired my entire door to factory spec and everything was operational again, with the exception of the master switch "heated mirrors, audio, light package & lock/unlock"
  • i later discovered that the DME/CAS was swapped from a donor E90
  • i reprogrammed all my modules to match this of an E92 criteria "coupe"
  • FRM was updated and coded accordingly
  • now my windows are operations only with the my FOB keys but not from the master switch.
  • i confirmed continuity of all my wires from the master switch X10725 to Driver Door X257 and then to FRM X14247.
  • i swapped the switch with another, and still no response. however, my switch works flawlessly in other cars.
  • The passenger mirror doesn't dip when in reverse
  • finally, my mirrors are 5 PINS with no LIN
Still no luck, as there is no signal from my master window switch to the FRM.

any ideas will be welcome and also am asking for help with pictures of the master windows switch plug from another E92 with no LIN to confirm if my pinning is correct or something is missed up on my end.

attached is pictures from before the replacement of the wiring harness and my current plug pin outs "which i have a doubt about"

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Last edited by adam.keel; 01-14-2026 at 10:39 AM..
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