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Brake light sensor issue

Posted: Fri Jan 07, 2022 11:30 pm
by adamswiatek
Hi forum members.
I would like to introduce my problem with car.
I have Seat Ibiza 2013 , today I recognised I lost break light at all. I checked fuse nr 20 which is ok and scanned car with Vagcom which shown no errors.
I heard it could be break light sensor issue but I can not locate it close to break pedal.
Does anybody know where the sensor is located and how to replace it?

Thanks a lot

Re: Brake light sensor issue

Posted: Sat Jan 08, 2022 10:12 am
by iichel
if you have vag com you should be able to read the status of the brake light sensor

Re: Brake light sensor issue

Posted: Sat Jan 08, 2022 10:54 am
by adamswiatek
I checked, there was no errors at all in all modules

Re: Brake light sensor issue

Posted: Sat Jan 08, 2022 2:05 pm
by iichel
we're not looking for errors, but simply to see the status of the brake light switch.

Re: Brake light sensor issue

Posted: Sat Jan 08, 2022 2:17 pm
by adamswiatek
I understand. How to check it then?

Re: Brake light sensor issue

Posted: Sat Jan 08, 2022 2:25 pm
by iichel
you enter a module with the brake light switch connected. i.e. the BCM. then you go to advanced measurement values, and then select brake light switch. in rest, it should say 'OFF' or 'non activated' and should go to a different state when you push the brake.

Re: Brake light sensor issue

Posted: Sat Jan 08, 2022 3:49 pm
by adamswiatek
Hi.
I went to check it again with Vagcom. There was not brake light sensor in BCM module in advanced measurement.
I found sensor in braking system in module ABA/ Brake.
I went to advanced measurements and found sensor in breaking system. I choosen/ticked it from the list and got information about it on screen. The first status was unpushed. When I pushed brake pedal , it changed to pushed status.
I am not really sure if it is that I should check.

Re: Brake light sensor issue

Posted: Sat Jan 08, 2022 4:43 pm
by iichel
could you please translate what it means?

Re: Brake light sensor issue

Posted: Sat Jan 08, 2022 5:14 pm
by adamswiatek
Yes. First position:

Sensor in braking system unpushed

When I push brake pedal:

Sensor in braking system pushed.

When I push brake pedal , status is changing to 'pushed'

Re: Brake light sensor issue

Posted: Sat Jan 08, 2022 5:29 pm
by iichel
That's likely the pressure sensor in the braking system. Not the electric brake light switch.

Re: Brake light sensor issue

Posted: Wed Feb 01, 2023 3:18 pm
by sammy21
gbwa wrote: ↑

Hi forum members.
I would like to introduce my problem with car.
I have Seat Ibiza 2013 , today I recognised I lost break light at all. I checked fuse nr 20 which is ok and scanned car with Vagcom which shown no errors.
I heard it could be break light sensor issue but I can not locate it close to break pedal.
Does anybody know where the sensor is located and how to replace it?

Thanks a lot
Be careful on road, it is not safe to drive in this situation.

Re: Brake light sensor issue

Posted: Wed Feb 01, 2023 6:49 pm
by Maarten
Probably brakelight switch behind pedal defective

Re: Brake light sensor issue

Posted: Wed Feb 01, 2023 7:05 pm
by iichel
In pq25 its located on the master brake cylinder and not on the pedal box.

Re: Brake light sensor issue

Posted: Wed Feb 01, 2023 9:36 pm
by Maarten
I stand corrected :mrgreen:
Wrong year :oops:

Re: Brake light sensor issue

Posted: Wed Mar 15, 2023 2:21 pm
by Aava
adamswiatek wrote: Fri Jan 07, 2022 11:30 pm WhatsApp aero downloadHi forum members.
I would like to introduce my problem with car.
I have Seat Ibiza 2013 , today I recognised I lost break light at all. I checked fuse nr 20 which is ok and scanned car with Vagcom which shown no errors.
I heard it could be break light sensor issue but I can not locate it close to break pedal.
Does anybody know where the sensor is located and how to replace it?

Thanks a lot
Looks like your car is trying to go incognito mode with no brakes lights! :) But sorry, I'm not much help in finding the sensor. :cry: