Brake Dash Warning Light?relay 2.2 2008

[carl13671]

Hello,hope you are all well,

Ive recently had the brake warning light appear on my dash.

Its the one that comes on with the handbrake or brakefluid but both of these are ok.The brake fluid is full and the handbrake is releasing fully.

Tonight I have replaced the front pads with pads that has the wear indicator on them to eliminate if it was the sensor that has put it on.

Ive yet to check the rear pads but im thinking the rear doesn't have a wear indicator on them??

Has anybody come across this or know how to knock it off/reset it.Im not sure if it will need reseting with a diagnostic tool as im not very familiar with the Citroen electrics and there isn't much about them on the net.

Any help appreciated,thanks in advance

Carl

[paul.h]

If it was a wear sensor on the front pads, all it does is connect to earth when the pads are worn by touching the disc - so it could be the wire to a pad is shorting to earth through worn insulation. You could disconnect each pad sensor wire to see if it helps.

 

If a fluid level sensor that is at fault then you could disconnect its connector and see if it clears, if not bridge across it and check. Similarly with the handbrake switch.

[carl13671]

Cheers Paul,

Do the rear pads have wear sensors on them?

So if I unplug the brake fluid sensor and connect both wires in the plug will this test it or do I earth the wire to see if its the level sensor?

The handbrake switch seems to work as it beeps when applied whilst driving,im presuming this is working ok.

[paul.h]

I do not know about the rear pads having sensors, you could look for any wires but I have not yet had a car with them.

 

For the fluid level, I would just unplug it and with the handbrake off see what happens and if there is no change try connecting both wires in it to see what happens - there should be no need to earth it. An internet search brought up that unplugging the sensor on a different car switched the light off showing a sensor fault.

[carl13671]

Cheers bud,ill give it a go tomorrow.

Ill get back to you

[carl13671]

**UPDATE**

I had a quick look at the rear brakes but there appears to be no sensor wire going through the back plate (think you were right paul h).

 

Today I have checked the fluid sensor by removing the plug and then connecting both wire together.Did nothing

I have taken the footwell plastic off and followed the handbrake wire as far back as I can and retaped it just incase it was touching anywhere.Found nothing.

 

I have followed the nearside brake pad wear sensor wire as far as I could until it disappeared in to the loom under the fuse box on the nearside wing.Found no touching earth.

 

Nothing seems to be knocking off the light.

I currently have the van sat on the drive with the battery disconnected in the hope this may reset something.

The only thing I can think of to try next is paying for a diagnostic tool test to see if this finds anything even though 3 mechanics have said this wont effect the light that is showing.

Even looked at removing the bulb until I found it has no bulb but a LED that is fixed to the board.

 

Im running out of ideas,has anybody else had this problem or got any more ideas to try??

 

Carl

[paul.h]

You have checked the things that put the light on, the handbrake switch and the fluid level so unless the abs light is also on, I do not know what else could be wrong.

 

If you have a diagnostic check it is probably best done using Citroen's equipment since others may not be able to check everything.