[pikkashoe]

Tonight on the way home I got the bulb out signal in my dash.

I cant seem to figure out which bulb/bulbs are out.

I dont recall what THESE bulbs do in the back, I never see the back of my car.



I cant get them to turn out no matter what, so Im guessing these are the ones that are causing the dash light. Are these reverse lights as well, or brake lights?
When I hit the brakes, only the corners light up. When I put the car in reverse, only the corners turn white as well? Im puzzled???

[pikkashoe]

Ok looks like its a brake force display lamp?

What the hell is that.

[ToadHollow]

Originally Posted by pikkashoe

Ok looks like its a brake force display lamp?

What the hell is that.

Upon "hard braking" you have another brake light that will illuminate to warn drivers behind you. You must do lots of hard braking, huh?? I believe the location you have shown is the bulb in question ......

Brake Force Display works by increasing the intensity of the brake lights in the rear lamp clusters by expanding the number of illuminated LEDs when heavy braking is detected.
The extra lighting is triggered after the anti-lock brake sensors detect a rate of deceleration in excess of 5 m/second².
As an example of the force of the braking, at 5 m/second² a briefcase placed on a car seat would accelerate off the seat onto the floor.
The system reacts within a few tenths of a second to increase the intensity of the stoplight illumination, projecting a highly visible warning beacon to following traffic.
Only deceleration forces trigger Brake Force Display, not simply pedal pressure, in order to avoid unnecessary illumination.

[cyphr]

I believe there's a TSB for this: http://www.bmwtis.com/tsb/bulletins/...p/B630207g.htm

[pikkashoe]

I actually found out, i have cc-id 134, which corresponds to the module being loose holding the bulb. So all the lights work fine.

I guess the brake force lamps only come on if you do intense braking.

Another little nagging issue!