PSM & ABS FAILURE

[Grant]

Bl**dy great,
driving along on rain soaked busy road when warning light came on "drive to nearest dealer PSM and ABS failure.
Pulled over switched off restarted & all ok again, no repeat since, anyone else had this?
G

 

[PGAdamopoulos]

Hi Grant
Funnily enough, yesterday after I pressure washed mine, and the undercarriage, to wash away any salt deposits I took it for a drive to dry the disks and I felt that my brakes had gone rock-hard and failing.
I parked it in the garage and couple of hours later I checked the brake fluid level & I took it for a drive. All seemed OK.
Also I have noticed for the last couple of cold spells that the coolant red light comes on on start up, but it goes away after a few miles
Cheers

 

[lee fulford]

Dr P I think what you were experiencing was water soaked discs and callipers.

Mine does the same everytime I wash the wheels. A drive down the road and a good few hard applications of the brake pedals sorts it out.

 

[dparslow]

It will probably be one of the ABS sensors playing up or just covered in dirt. PSM usually picks up the wheel speed signal through the ABS sensors (1 on each wheel), similar to how the ABD works on my 993tt.

 

[Grant]

ORIGINAL: dparslowIt will probably be one of the ABS sensors playing up or just covered in dirt.

Covered in dirt is likely!!!
My silver car looks cocoa brown at the moment, with grass taking root under the wheels arches!!! Must clean her, but don't have the heart at the moment as 1 mile later she will be brown again!!!

 

[PGAdamopoulos]

Hi Lee
I think you must be right now thinking about it, because it was the 1st time I pressure washed the undercarriage and wheel arches/disks/calipers.
Cheers

 

[Guest]

Hi Grant

I had the same problem with the PSM and ABS failure light coming on today on my 996 t, I stopped the car after I got to my friends and restarted her and the warning light just switched off., no problems on the way back home. I was going to phone up my local porsche center tomorrow because the car still have a months warranty on it, anything to be concerned about?

Edward

 

[Grant]

ORIGINAL: Edward

Hi Grant

I had the same problem with the PSM and ABS failure light coming on today on my 996 t, I stopped the car after I got to my friends and restarted her and the warning light just switched off., no problems on the way back home. I was going to phone up my local porsche center tomorrow because the car still have a months warranty on it, anything to be concerned about?

Edward

Hi Edward,
In honesty I haven't done anything about the issue as it hasn't popped up again. Knowing how expensive these things are to fix, best get yours checked before the warranty runs out. Let us know the out come, perhaps you would be good enough to post what the OPC says.
Cheers

 

[Guest]

Since my last report on a warning light about my PSM failure that I posted in November. I took my 996tt to the OPC in Colchester. They traced it to a sensor in the tubo and also another valve in the tubo unit is not opening properly, like a dump valve. So they will change the sensor and the turbo under warranty. I was lucky as the warranty runs out in 2 wks time.
But I still dont understand why the PSM light came on! Have to give them a ring tomorrow.

 

[Guest]

Phoned upOPC about why PSM an ABS light coming on, they said it is a warning light for a lot of interrelated sensors so any one of the sensors can trigger the PSM warning light.