Brake sensor light won't go off

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PetKiller

Member
Just changed the rear pads today, really straight forward and far easier than on any other car I have done them on BUT, mt brake pad sesor light is stil showing on the dashboard. No, I did not change the sensor even though I do have a new one because I left in in my flat (London) and changed them down here (Cornwall) so obviously when I remembered I had forgotten it I was not keen on turning around and driving 200 miles for it. It looked in OK shape.

Is there some sort of reset procedure? Or should it simlpy of turned itself off?

Thanks.
 
No reset procedure, but you know there are two of the little buggers (left front / rear right), so could the other one have worn through?
 
mine looked perfect and i had the same thing, you just have to change them. 2 minute job and the light will go off
 
Checked the front pads and they have plenty of life left in them so will pull out the rear sensor and replace it. Can't believe I forgot the damn sensor!! Even remembered to take some copper grease with me for the backs of the pads and the hubs :x
 
Oh cock!!!!!!!!!!!!

Has anyone here actually changed this bastard sensor? The bit that goes into the pad is fine but the other end (plug)!!!! f**k, how the hell am I supposed to get fingers to it!! Argh!!!!
 
the sensor plug is just a box on the wheels arch, open the box, twist and pull and the old plug comes off. then reverse for putting it on.

i changed my front one, was really easy. have you took your wheel off to make it easier?
 
Yes, the wheel is off and I have had my head underneath so I can see - and I have located that box I think you are talking about but am struggling to get in it. Lots of swearing going on half an hour ago... stopped now thanks to a coffee and a bear shaped chocolate covered shortbread biscuit! Will have another go in a minute...
 
maybe use a screwdriver to get in, if they havent been opened for ages they might just get a bit sticky. if i remember right there are 2 little clips holding it closed

on a brighter note, i know the biscuits your on about and they are amazing!! :thumbsup:
 
OK, some success. To get to the rear one you need to remove the plastic trim under the wheel arch – you can then get hands in and see what is going on. Unfortunately I tried doing it before I worked this bit out, got my fingers on what I thought was the plug, pulled it out blind only to discover the ABS light sensor also lives in the same box. So now I have successfully replaced the brake sensor, the brake wear light is off, but now my ABS light and the "your doing a skid" light is on. :headbang:

I took some photos and will put them up here later for future reference :)
 
This is the biscuit!
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not those bears! i thought that they were the ones called 'bears' in the box by cadbury..... they do look tasty though!

and good to hear you has some success
 
Accidentally pulled it off (the plug) while changing the brake wear sensor. Put it back on but now the ABS light and warning triangle light won't turn off. Now the sensor was fine before I unplugged it – what have I done?
 
PetKiller said:
Accidentally pulled it off (the plug) while changing the brake wear sensor. Put it back on but now the ABS light and warning triangle light won't turn off. Now the sensor was fine before I unplugged it – what have I done?
Click to expand...

Sorted. just needed to hold the DSC button down and it reset.
 
Okay, I had a pig of a morning doing this simple task simply because I did not know how to get to the plug end of the brake wear sensor - unlike the one for the front brakes it is hidden and hard to reach, you cant see it through the access panel and it is hard to just do it by feeling it because the space is so cramped. You also run the risk of undoing the wrong sensor as the ABS one is housed in the same box. So, as I was doing it I took some photos and uploaded them here tol hopefully save someone else an attempt at my 'how many times I can say ©unt in half an hour' record.

It is very easy - a chimp could do it once the inner wheel arch is off :)

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nice pics, this will be a great post to refer to for others

i just change the pads when they get low, before that stupid sensor goes off ... a new sensor is like 1/3 of the cost of the pads and more work, so when it gets to say 20% left, i just change them to keep the original sensor

not really for the cost savings, more out of laziness to not have to replace the sensor :D

the only thing i would disagree with the above is that the Honda brakes are easier to work on ... those are as mickey mouse as they come. not that the bimmer ones are hard or anything, but for some reason bimmer uses hex keys which was new to me
 
why do you have to replace the sensor once it activates is it not just earthing to the disk when it wears have an mot tommorow and the brake light is on have changed the pads but not the sensor can i disconect the sensor to get rid of the light
thanks in advance
 
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