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Front brake pad warning lights on!

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As the title says I have the front brake pad warning light has come on.

Now you might think, "well go get your pads changed !!"

If it was only that easy, 2 months ago I changed the front disc's and pads.
I have just spent the last 30 min kneeling in a nice layer of ice (thanks to a complete t1t of a nextdoor neighbour) and got eyes on at all 4 pairs of pads, I did the rear too.

After fitting the new disc's and pads there has been a high pitched noise under light braking but more pressure noise goes away, I have put this down to them bedding in.

Could this down the the cold? I dont know how since the sensor is part of an electrical system.

Any ideas would be great.
 
When you fitted the new pads, did you coat the back of the pads with copper grease? If not, that is the likely source of the squeal.
As for the warning light, have you checked that the sensor cable is still connected, and if it is, checked for water ingress?
 
Depending on the make of car you sometimes have to re-use the spring clip which holds the pad tight into the caliper. You may or may not have to do this of course so don't go looking for something which isn't there. Hayne's manual is your best bet for advice. Also, as mentioned above, copper grease on the back of the pads - not the face!

As for the light, take the bulb out. Satis! :PDT_Xtremez_30:
 
Is your brake fluid level correct? The light comes on if your fluid level is low!
 
hahahahaha a fairy kneeling in snow and ice it does my heart good hahahaha
 
Is the light on permanently or just under breaking?
Has it occurred recently or did it start after you changed your discs and pads?
Did you return the piston back far enough when you changed the pads?
Did you unscrew the reservoir cap when you changed the pads and refitted it tightly?
Did you bleed your brakes once you had done your pads?

The light comes on if the handbrake is on, if there is a low pressure or fluid level or possibly if there is an ABS fault.
 
MrMasher said:
Is the light on permanently or just under breaking?
Has it occurred recently or did it start after you changed your discs and pads?
Did you return the piston back far enough when you changed the pads?
Did you unscrew the reservoir cap when you changed the pads and refitted it tightly?
Did you bleed your brakes once you had done your pads?

The light comes on if the handbrake is on, if there is a low pressure or fluid level or possibly if there is an ABS fault.
Click to expand...

You forgot to ask
Are your knees still cold? hahahaha:PDT_Xtremez_14:
 
MrMasher said:
Is the light on permanently or just under breaking?
Has it occurred recently or did it start after you changed your discs and pads?It started last night
Did you return the piston back far enough when you changed the pads?
Did you unscrew the reservoir cap when you changed the pads and refitted it tightly?
Did you bleed your brakes once you had done your pads? I was a bit gash, I kept the system closed, kept the cap on and pushed the piston back with a spanner and a hammer handle as a fulcrum.

The light comes on if the handbrake is on, if there is a low pressure or fluid level or possibly if there is an ABS fault.The indicator is for the front pads the rear is a different light.
Click to expand...

I know it was gash to not bleed the brakes and keep everything closed, but I don't have the kit for it and have never done it before.
So thought if I don't disturb the system then it shouldn't need doing.

I did this the last time I changed the pads and it was fine.
 
I've never bled the brakes after changing the pads, don't see why you would need to? If you have kept the system closed, no air can get in. I have had to syringe some oil out after re-setting the piston, that's all.
 
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