Have had a read of the other threads that mention this...but here goes.
couple of nights ago, during a quick trip across town,
the HDC warning Light (the one with the (!) ) and the Traction Control warning light illuminated and i was thinking....hmm, whats that all about..
but it was icy so i concentrated on driving.
when i made the reurn journey 15 mins later..the lights did their normal thing and then went out. and a quick check of HDC showed it was working ok.
Anyway, last night during a 200mile trip they came on again...
(motorway driving, so not much braking)
and refuse to switch-off. This morning they are still on.
HDC does not function, the Gearknob switch appears to do nothing.
(i have checked the wiring..as i had repaired that a few months ago..)
ABS is still working just like normal. (which is nice)
After reading the threads that mention this type of fault....
Brake Lights are ok and come on when you would expect.
all the other electrical systems seem to be fine.
so what should i try next.
i was wondering what could affect TC enough to upset it without upsetting ABS ? surely that should rule out the wheel speed sensors.
but my understanding is that all the 'clever' bits, ABS, TC, EBD and HDC are all functions of the ABS computer relying on the Wheel Sensors.
The only thing i could think of was that for some reason it thinks the brakes are hot....and has disabled HDC. but i couldn't see why that might affect TC while leaving ABS working.
history bits...
I had new front brake pads in December...done about 2500 miles since.
I did have 2 new tyres last week (Rears) though have done about 500miles before the problem occured.
is there anything 'special' about the rear wheels, brake hubs, sensors ?
that a ham-fisted tyre fitter might have clonked ?
any advice appreciated....
and NO i havn't been through any puddles !
Cheers
Richard.
couple of nights ago, during a quick trip across town,
the HDC warning Light (the one with the (!) ) and the Traction Control warning light illuminated and i was thinking....hmm, whats that all about..
but it was icy so i concentrated on driving.
when i made the reurn journey 15 mins later..the lights did their normal thing and then went out. and a quick check of HDC showed it was working ok.
Anyway, last night during a 200mile trip they came on again...
(motorway driving, so not much braking)
and refuse to switch-off. This morning they are still on.
HDC does not function, the Gearknob switch appears to do nothing.
(i have checked the wiring..as i had repaired that a few months ago..)
ABS is still working just like normal. (which is nice)
After reading the threads that mention this type of fault....
Brake Lights are ok and come on when you would expect.
all the other electrical systems seem to be fine.
so what should i try next.
i was wondering what could affect TC enough to upset it without upsetting ABS ? surely that should rule out the wheel speed sensors.
but my understanding is that all the 'clever' bits, ABS, TC, EBD and HDC are all functions of the ABS computer relying on the Wheel Sensors.
The only thing i could think of was that for some reason it thinks the brakes are hot....and has disabled HDC. but i couldn't see why that might affect TC while leaving ABS working.
history bits...
I had new front brake pads in December...done about 2500 miles since.
I did have 2 new tyres last week (Rears) though have done about 500miles before the problem occured.
is there anything 'special' about the rear wheels, brake hubs, sensors ?
that a ham-fisted tyre fitter might have clonked ?
any advice appreciated....
and NO i havn't been through any puddles !
Cheers
Richard.