Break Lights

[Julianutt]

HELP........

I have a yaris (2005) all of a sudden my brake lights have failed.... (all 3) I have checked my bulbs, I have checked the fuse and replaced the break sensor on the break pedal...... have I missed anything?????

[Raistlin]

Have you checked the wiring loom for continuity ?

[Julianutt]

NO I have not yet.... Being a new (ish) car I thought maybe it was something simple (ish)!!!

I will have to get a test meter I guess!

Have I missed anything simple?

[Raistlin]

It would appear not...

[alfiejts]

Nothing else simple but without wishing to doubt, are you really sure you've checked the right fuse - that's the most obvious cause and there's not much else to go wrong...

Try swapping it with another of the same colour (same ampage) to make sure its really OK (or check the fuse with an ohm meter for continuity). Sometimes the fuse looks OK visually despite being blown.

If fuse definately ok, next thing to check is that you are getting a 12v power supply to one of the two wired on the brake pedal switch and then to check that you are getting 12v other wire - the output of the switch when the pedal is pressed.

If that's all ok, then its an issue between the switch and the back of the car where the wiring splits between the three lights - but that's very unlikely....

[Raeman]

As Alfie says, i would be double checking the fuses. Also have a check around the lamp cluster for any water leaks.

It's possible that some water has got behind the light unit and is shorting out the bulbs.

[Julianutt]

Many thanks EVERYONE.... I will have someone look at it for me I think, Im just a nurse! :-(

[muddy90]

As daft as it sounds have you checked the new sensor works, i did the same on another car and after lots of banging my head against walls it was the new sensor that was duff.