BRAKE LIGHT

[buncey1506]

HIA CAN ANYONE HELP

MY TWO LOWER BRAKE LIGHTS ARE NOT WORKING BUT THE ROOF ONE IS
I HAVE CHECKED OBVIOUS FUSES AND CHANGED BULBS BUT TO NO AVAIL

2003 MEGANE 1.5 DIESEL

[davelowe]

Check the wiring.

[IJK]

I have this problem too - when you say check the wiring - what am I looking for ? 2 wires exposed/touching, where do I look - just in the boot ?

Sorry to appear so thick

[davelowe]

You could connect a multimeter across the terminals after you have removed the bulb. Have an assistant press the brake pedal with the ignition on or engine running. It should register a healthy voltage.

Also check each terminal against the body work. One should register 12V give or take, the other should register 0 (the earth).

If you get a reading in the housing, then you may have an earthing fault (bit doubtful though as each side has a separate earth - but check using resistance setting). If you get no reading, then there is likely to be some kind of wiring fault that needs further investigation.

If you haven't got a multimeter already, they can be bought for around £10.

Since you have no blown fuses, it is unlikely that there is a problem with frayed cabling shorting. Expect to do more investigation.

Let us know how you get on.
Dave

[IJK]

Just to say the brake lights started working yesterday - probably a bigger problem with ECU as now air bag light is on...

[tallpaul]

its a common problem, disassemble, clean up the contacts and reassemble worked for mine the first time then i resoldered it