Brake lights stuck on when the headlights are turned on - help!

[CupraTim]

As it says really - for some strange reason recently my brake lights are stuck ON when I turn my headlights ON. When I brake nothing happens to the brake lights. However when I turn my headlights OFF the brake lights turn OFF and come on when I brake. However just to add to it, when the headlights are off and I brake my led sidelights come ON!!

This has only recently started to happen so not sure what it could be! I had the brake switch done about a year ago at a vag specialist. I am running LED sidelights and HID 6k headlights. And I'm driving an LCR

 

[akchappers]

Ok try this mate . Seen it before on vauxhalls and a few others.
Try changing BOTH you're brake bulbs. Sometimes a bulb fails and it drops a filament onto the other filament and causes this to happen. Seems weird I know but I've seen it happen to a few cars especially the braking then front sides come on! Try it and let me know!
Ak

 

[poliq]

Sounds to me like you got an shortage between brake terminal and running light terminal.. Check the outer cluster in th boot!

 

[CupraTim]

I recently changed 1 of the rear bulbs but I'll try it again.

Secondly - what do I need to look for when checking the rear clusters?

 

[Harris.]

Have you put the right bulb in? For example have you put a twin filament in instead of a single, or vice versa. Seen this happen loads of times and causes these problems.

 

[akchappers]

Bet I'm right! Change the bulbs!
Ak

 

[CupraTim]

Have you put the right bulb in? For example have you put a twin filament in instead of a single, or vice versa. Seen this happen loads of times and causes these problems.

Ill have a look - blame halfrauds if it's wrong!!

 

[Brettyboy]

Bet I'm right! Change the bulbs!
Ak

Happened 2 me,when i turned light on brake light flickered 4 30 secs & ns side light came on when brake was applied,changed nsr brake/tail bulb all is good

 

[andycupra]

does the 3rd brake light come on?

I would say you have put the pulb in the wrong way around. (as its a twin element there is a right and wrong way around to put the bulb in)

 

[akchappers]

Change the bulbs!
Ak

 

[bengie_cupra]

have you considered the lamps?

bulbs go in the ground...........

 

[akchappers]

Oh I'm sorry!
CHANGE THE LIGHT BULBS THAT COME ON WHEN YOU DEPRESS THE PEDAL THAT OPERATES THE BRAKE SYSTEM! In the rear lamps!
Ak

 

[CupraTim]

Changed the bulb/lamp as the stupid one at halfords (as written in their book) says Cupra R 830 and that's a single filament. The other bulbs/lamps have twin filaments an they are number 832 for the Cupra (twin filament) now fitted all works fine

 

[domin8or]

Oh I'm sorry!
CHANGE THE LIGHT BULBS THAT COME ON WHEN YOU DEPRESS THE PEDAL THAT OPERATES THE BRAKE SYSTEM! In the rear lamps!
Ak

What exactly are you trying to say

 

[akchappers]

Changed the bulb/lamp as the stupid one at halfords (as written in their book) says Cupra R 830 and that's a single filament. The other bulbs/lamps have twin filaments an they are number 832 for the Cupra (twin filament) now fitted all works fine

So I WAS right all along eh!
Nice to be right. For once.........
Glad it was a cheap fix mate!
Ak

 

[akchappers]

What exactly are you trying to say

Was being a touch sarcastic mate!
Ak

 

[Goran]

Thx bro.....you're right.....3 types of bulbs are existing.....changed them and now the stop light is OK

 

[Addy2019]

I have same problem my break lights work but when I turn my side lights on my right and left break light on with the side lights also my rear fog light on with side lights and my front side lights gone of I plugged my carista into the car and found a engine fault code 02071 local databus then I google it and it says check all your slave modules that’s where I’m upto but where the slave modules are I don’t know