Can I borrow a haldex ecu please..
Our S3 has an "Awesome" haldex ecu upgrade which is believed to be causing issues with the abs...
Basically what's happening is this:
It first appeared on our way home from collecting the car in January, sat on the motorway plugging our way home when... up came the yellow triangle & abs warning lights in the dash !!
Stopped en route for fuel and the 2 warning lights didn't reappear, in fact they didn't reappear for a few weeks.....
Took it to our local Audi master techy chappy who scanned it only to find no fault codes on the car whatsoever *:scratch: *so we left it at that... out on a country drive doing 40 mph when the lights reappeared !!
a pheasant decided to fancy its chances and ran into the road, so I braked quite hard, the brake pedal felt like it was pulsing and dropped nearly to the floor *:shock: *it felt as if I was braking on dry tarmac onto gravel!!
At higher speeds the brakes are spot on BUT the brake pedal does feel much softer than our previous S3 some 7 years ago now, maybe I'm so used to the UrS4 & RS4 brakes I "think" the pedal is soft but I'm sure it should feel harder to push than it is....
New discs and pads fitted this week has made no difference, the wheel abs rings and sensors have all been double checked, so have the vacuum hoses. No faults came up on the vag com block for the abs or brakes so all is good there. The brakes have been checked and the fluid changed twice within a few days, still no difference...
without going into changing the abs module/ pump assembly the only other thing we can think of is this Awesome haldex ecu
It's programmed to be more of a 50/50 drive instead of whatever %age split a normal haldex ecu does ( the haldex has had its 40'000 mile oil & filter change put the symptoms persist)
Does anyone have a spare 2001 S3 8L comparable ecu I can borrow please and see if this is the culprite ?
Basically the abs is kicking in early at slower speeds and it's un nerving when the car doesn't stop as it should :shock:
Any help would be appreciated *:thumb: