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+---- Thread: Brake lights (/showthread.php?tid=4865)
Brake lights - GILSLEY87 - 3:rd-Jan-2021
Hellow sorry if I have posted twice I have a astra j 2011, long story short I went through a puddle and had to change my electric parking brake motor changed this and works fine, the problem I now have is my brake lights won't go off even when I switch the car off they only turn off when the battery is disconnected, then when re connected they come back on, I have tried taking the fuse and numerous relays out still doesn't go off I have tried unplugging both cables going to brakes still doesn't go off I have even checked under the fuses it's dry and no moister please help thanks in advance
RE: Brake lights - Jpbroad1970 - 4:th-Jan-2021
Maybe worth looking see if your bcm has any moisture in it or signs of water damage
RE: Brake lights - GILSLEY87 - 4:th-Jan-2021
I checked under the fuses bcm and bone dry no sign off damage
RE: Brake lights - Jpbroad1970 - 4:th-Jan-2021
Have you opened up the bcm to double check.
There have been issues on bcm before.
Other than that will need I diag session with someone I should think, preferably someone with gm mdi
RE: Brake lights - GILSLEY87 - 4:th-Jan-2021
I have mate was bone dry under there and no sign off corrosion or water being in there this is the one under the fuses in the bonnet, I disconnect the fuses in the glove box and the lights go out I believe these goto k9 control module
RE: Brake lights - Jpbroad1970 - 4:th-Jan-2021
Bcm is in the car in the centre console. All the body related stuff goes to it.
https://workshop-manuals.com/vauxhall/astra-j/power_and_signal_distribution/data_communications/repair_instructions/body_control_module_replacement/
RE: Brake lights - GILSLEY87 - 4:th-Jan-2021
No I haven't looked at that one and I believe that the problem is in there somewhere as that's where the fuses goto and when fuses are taken out the lights go out I checked the case and the case was dry
RE: Brake lights - Jpbroad1970 - 4:th-Jan-2021
They have been known to fail and get moisture trapped inside.
Disconnect battery though before unplugging