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Until I could take a decision regarding the replacement of the BPM and the version to use, I decided to wire the output of trunk fuse #21 directly to the tail lights -- I'd have the dashboard error, but at least, lights.
Removing the tail lights assembly, I banged the left one a bit too hard, and noticed the second filament of the brake/tail bulb had broken down. Dammit. So I went to buy a spare.
Mounted it : EVERY. THING. IS. WORKING. PROPERLY. Tail lights are back on, as well as the front side markers.
I don't understand. I'm guessing the original bulb was misbehaving even though both filaments looked fine, but I can't see how it would wreck such havoc. It's not like the tail lights and side markers are mounted in series? I think.
The battery, unfortunately, seems to be on its last legs... currently in charge, it didn't have enough power to start the engine.
Not to add insult to injury, especially since I'm the insulted one, but I strongly suspect that the battery was fine until I did a short circuit a couple days ago and put the car in lockdown/antitheft protection.
All this to say: sorry for having wasted your time with a nonexistent problem
Don't try to make sense of it, just roll with it! When you have a problem, the secret is to just stay with it and eventually you figure it out, or you stumble onto a fix. You didn't waste anyone's time. In fact, this thread may be very useful to someone else who has the same problem sometime.
The terms fog and running may be mixed up on the print , different English languishes
But yes on power at the red and blue which should be the center pins on the bulb sockets
There is a history of the socket ground path lacking which would allow enough current to pass and illuminate the bulb but not enough to not trigger the current sensor to give you the light inop indication
The terms fog and running may be mixed up on the print , different English languishes
But yes on power at the red and blue which should be the center pins on the bulb sockets
There is a history of the socket ground path lacking which would allow enough current to pass and illuminate the bulb but not enough to not trigger the current sensor to give you the light inop indication
incorrect bulbs will do this
ok, test bulb socket first. I thought he wanted me to test the module.
Using a test light, power on, I have power to green wire on left rear (US passenger) and power on red wire right rear (US driver). Nothing happens at the brake light bulb wire. It is orange on drivers side, and orange on passenger side.
Not quite sure of the wire colors you mentioned but we can go further
Do you have the 3rd brake lights or high mounted upper center lights during brake pedal depression
Fuse check
Relay swap
This is a pic for a fuel pump issue but your relays are in the pic
3rd high mount brake light works. Replaced fuse already, no luck. Here is a pic of my fuse box. I swapped the stop light relay with one of the other ones, no luck.
Aint that a pisser! I didnt realize that was controlled by the other fog light switch! I feel stupid....nevermind then. Geez. Hkwever, the "check rear lights" stays on. I do have 2 bulbs out in the high center mount. Would that cause that display message?
Since you have the high center brake lights you proved you have a good brake pedal switch , fuse # 8 , ignition switch ground path , and stop lamp relay closing
Your physical rear light assembly is different then mine as I have the X300 earlier version
09-30-2020, 10:56 AM
When you have a problem, the secret is to just stay with it and eventually you figure it out, or you stumble onto a fix. You didn't waste anyone's time. In fact, this thread may be very useful to someone else who has the same problem sometime.
