Hi everyone

I’ve got a 2008 tdv8 RRS. Long story short when I press the brake pedal I get greeted with no end a fault. HDC failure parking brake failure engine fault suspension the lot! It also goes in limp mode.

I replaced the rear brake bulbs and brake light switch with no avail. I had the instrument cluster repaired as I’m aware this can cause those same faults. Nothing changed.

I’m genuinely at a loss. When scanning the car it says the body control module has a fault on the passenger wing mirror ?
Also the brake lights don’t work at all when pressing the pedal. I’ve unplugged the rear lights and it still does the same thing when pressing the pedal. I’m thinking there might be a short somewhere? One of the rear lights was filled with water.

Thinking of selling for spares. What price would you recommend?

Need to see if you have power at brake switch with ign on (the red wire and the green/orange wire)
Then check fuses 15 and 66 behind glovebox, if you don't get this.

Last edited by Andy K on Fri Aug 06 2021 7:59am. Edited 3 times in total

Only a thought but you didn't press the brake pedal by any chance while changing the switch as this can damage the switch.

Cheers
Col

yes that is true in a way

The brake switch is self calibrating, and there is a specific install procedure, so that maybe why the lights aren't working.
Having said that, pressing the pedal has the effect of creating error messages, so I guess its detecting pedal movement

remove switch from car, but leave plugged in, see if lights work with ignition on.

Be worth checking all of the earth connections. Not unknown for a loose one to cause a spate of issues.

What is the exact error code that you get? That might help. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

I watched a video on YouTube to put it in. Defo didn’t press the brake pedal. I got it from eurocarparts £9. So don’t know if that would make a difference to a genuine one. Brake lights still don’t work.

Andy K wrote:

Need to see if you have power at brake switch with ign on (the red wire and the green/orange wire)
Then check fuses 15 and 66 behind glovebox, if you don't get this.

RRSTDV8 wrote:

Be worth checking all of the earth connections. Not unknown for a loose one to cause a spate of issues.

What is the exact error code that you get? That might help.

Okay so quick update. There was no fuse in fuse 15. Popped one in and no faults now except engine fault

what fault code does the engine say ?

EDIT: Oh injector faults

https://www.rrsport.co.uk/forum/post614793.html#614793

Last edited by Andy K on Fri Aug 06 2021 9:09am. Edited 1 time in total

Can’t see a fault code as I’ve no code reader. It was my friends who I used. It just says engine fault on the little screen

Andy K wrote:

what fault code does the engine say ?

EDIT: Oh injector faults

https://www.rrsport.co.uk/forum/post614793.html#614793

Jjmorris90 wrote:

Can’t see a fault code as I’ve no code reader. It was my friends who I used. It just says engine fault on the little screen

RRSTDV8 wrote:

Andy K wrote:

what fault code does the engine say ?

EDIT: Oh injector faults

https://www.rrsport.co.uk/forum/post614793.html#614793

That was a TDV6. Seems our new friend has a penchant for broken RRSs...

Ok this is all that is left