Porache Boxtser 987 help??

[MattyLBey1993]

Hey everyone, I'm an owner of a Porsche 987 Gen 1 3.2 Model and have had some issues come up recently and i'm not entirely certain whats gone wrong.

I changed my tyres at the garage i've gone too and had no issues but just a few days later on a drive to work my dash came up with a PSM and ABS failure lights.
I took it back to where I had the tyres and they confirmed nothing was by their doing.

If I then start the car up as normal, the lights won't be on but will come on after around half a mile of driving or so and then will be there until turning off of the car which totally resets the lights. Also, if when I start the car and turn off PSM I don't get the failure lights.

I've taken it to my nearest Porsche specialist garage to have it a diagnostic check and the garage said they were unable to talk with the instrument pod of the car so they believed that to possibly be the problem or the ECU.

Does this add up to any of you as everything was fine just before a simple tyre change and it could obviously be a coincidence.

Many thanks for any help or assistance!

[Decoy]

Is the battery low/recently went flat? Has the car had a long drive recently?

[MattyLBey1993]

Decoy said:

Is the battery low/recently went flat? Has the car had a long drive recently?

No signs that the battery may be low but could check that.
The car is daily driven 60 miles for work.. other than that no real far milage

[thegoose]

Those symptoms are typical of MAF failure.

[cd1957]

They should have gone into psm/abs to look at fault codes,don't need to go into instruments for this, as said could be airmaff and that may show up in oxygen sensor adaption values.

Chris

[ChipsAndCheese]

I had a PSM/ABS failure error a few years back (symptoms similar to your's) and it was simply a dodgy brake switch. JZM replaced the part (£8 at the time) which sorted it.

[GreigM]

ChipsAndCheese said:

I had a PSM/ABS failure error a few years back (symptoms similar to your's) and it was simply a dodgy brake switch. JZM replaced the part (£8 at the time) which sorted it.

This. Brake pedal switch is a common cause.

[PR36]

GreigM said:

ChipsAndCheese said:

I had a PSM/ABS failure error a few years back (symptoms similar to your's) and it was simply a dodgy brake switch. JZM replaced the part (£8 at the time) which sorted it.

This. Brake pedal switch is a common cause.

I have this at the moment. Durametric is showing brake light switch but I've replaced two and the problem still comes back. Its in at 9E so i hope they can fix it for me. These types of errors seem to be most commonly caused by maf, brake light switch, low battery, but mine is a bit of a mystery!

[GreigM]

PR36 said:

I have this at the moment. Durametric is showing brake light switch but I've replaced two and the problem still comes back. Its in at 9E so i hope they can fix it for me. These types of errors seem to be most commonly caused by maf, brake light switch, low battery, but mine is a bit of a mystery!

would possibly suggest wiring harness to the brake switch then - could be a pain to diagnose, good luck