au xr8 cruise control

mk1gt500 · 31-01-2007, 08:30 PM

I have got problems with my cruise i have replaced the brake light globes and put a new brake switch on the pedal but still does not work. The buttons on the wheel work when you go to set the cruise with the button on the dash it jumps to set and then will go back to the on sign. Does any body know to fix this please.
thanks

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AU2PWR · 31-01-2007, 08:31 PM

Did you Replace them with LED Lights ....

mk1gt500 · 31-01-2007, 09:58 PM

No replaced with standard light globes 21/5w

AU2PWR · 31-01-2007, 10:12 PM

Check your Fuses , and Check all your Lights are sitting in the Cups Properly

mk1gt500 · 01-02-2007, 07:43 AM

I have checked all fuses and the lights still will not work what next???

JefXR8 · 01-02-2007, 08:39 AM

Quote:

Originally Posted by AU2PWR

Did you Replace them with LED Lights ....

was thinking about doing this,does it cause problems?

SSVPom · 01-02-2007, 09:07 AM

Are you sure it's not the fuse? Tiny blue 15A thing...

AU2PWR · 01-02-2007, 09:24 AM

Led's Sometimes cause the Cruise Control not to work as they always have a current running through them , so the ECU thinks the Brakes are on Permanantly , Brakes = No Cruise Control ,

Its Gotta be either the 15A Fuse or the Globe is Faulty ,

Tech Trainer · 02-02-2007, 11:23 PM

Is the car manual or auto?
If manual check the clutch pedal height.

mk1gt500 · 03-02-2007, 06:45 PM

The car is auto can it be anything other than the fuse or the lights ??

AUXRVIII · 03-02-2007, 07:02 PM

Have a look at the pressure switch on the brake master cyl for leaking fluid, disconnect the switch and inspect it, the fluid shorts the switch which stops the cruise from setting.

mk1gt500 · 03-02-2007, 08:33 PM

Is the switch open or closed type at the moment it is closed eg power runing thought it

AUXRVIII · 03-02-2007, 09:18 PM

I've actually never tested one, but I've replaced plenty due to leakage of fluid into the connetor.

AUXRVIII · 03-02-2007, 09:22 PM

Just checked, brake pressure switch is normally closed.

AUXRVIII · 03-02-2007, 09:24 PM

Try testing the resistance of the switch

mk1gt500 · 03-02-2007, 09:25 PM

When you take the plug off the switch there is no fluid in the plug.

AUXRVIII · 03-02-2007, 09:26 PM

PM me you email & I'll send you some info.

Gonz · 05-02-2007, 12:32 AM

Quote:

Originally Posted by AU2PWR

Led's Sometimes cause the Cruise Control not to work as they always have a current running through them , so the ECU thinks the Brakes are on Permanantly , Brakes = No Cruise Control ,

Its Gotta be either the 15A Fuse or the Globe is Faulty ,

sorry to jump in with my own problem, but...

hmmmm, funny you should mention this, ive recently fitted LED parker/brake light and have since noticed my cruise control doesnt work when i have my head lights on...works fine with the headlights off!! i was thinking it had something to do with it, kindy thinking along the lines of when you use LED's on your blinkers, it makes them flash faster!
with the blinkers im told you need to fit an in line resister(i think)to trick the system for it to operate normaly, is this what i need to do to the brake lights??

Gonz.