Aaargh - PRNDS!

[David's8]

Originally Posted by Adrian E

Looked on ETKA this morning and the RRP is now £183.71 incl VAT so you should be able to get a new one for under £150 from TPS or local dealer. Part number is 01L 919 821B.

It lists the 10 pin plug for gearbox codes FUM, FUU, FSG, FBE, FBG. Mine's the last of those.

Rather worryingly for anyone requiring the 8 pin version, it's jumped in price to £350......

Thanks for that Adrian
Makes the sponsors 8 pin price seem not too bad! Fortunately mine, as you say, is most probably the 10 pin as its FBG. I'll verify the connector though when I can get under the car. Thanks for the part no as our sponsors list them without as they say that they cant ever find it on the removed part.

[Adrian E]

Yours is the same age as mine, and gearbox code, so doubt it's anything other than 10 pin.

[David's8]

Well, got underneath the car today and examined the (10pin rectangular) plug. Clean as a whistle and no corrosion. I had hoped that there might be some obvious cause of poor signal or whatever. Any way, gave it a few squirts of contact cleaner and out it back together and when I backed off the ramps - no PRNDS. Manoeuvered about the driveway and all seems OK so far. Not counting my chickens but.......

[Adrian E]

At least if it comes back again you've confirmed it as a likely cause if it stops it for a few weeks.

I had similar with a front ABS sensor that I was convinced couldn't be faulty, as it's the only one I've previously had cause to change! Sure enough after 5 years and some copious fiddling I had to accept it was getting worse. New sensor and been perfect since!

[David's8]

Originally Posted by Adrian E

At least if it comes back again you've confirmed it as a likely cause if it stops it for a few weeks.

I had similar with a front ABS sensor that I was convinced couldn't be faulty, as it's the only one I've previously had cause to change! Sure enough after 5 years and some copious fiddling I had to accept it was getting worse. New sensor and been perfect since!

Exactly. Just driven into town to pick the Mrs up and it behaved smoothly in S and D and was OK going into Reverse.

My indy garage priced the switches from TPS and the 10 pin version was £175+VAT whilst the 8 pin was around £235 + VAT(but N/A).

[moltuae]

Originally Posted by David's8

Well, got underneath the car today and examined the (10pin rectangular) plug. Clean as a whistle and no corrosion. I had hoped that there might be some obvious cause of poor signal or whatever. Any way, gave it a few squirts of contact cleaner and out it back together and when I backed off the ramps - no PRNDS. Manoeuvered about the driveway and all seems OK so far. Not counting my chickens but.......

Always been the same here. Never any noticeable corrosion, yet after a quick clean, the box behaves for another 12 months or so. I've had that happen at least 3 or 4 times now; too many times to be coincidental, me thinks. Hopefully that's all it is in your case too

[David's8]

Hey Ho! The switch seems to be playing up.- at least I hope its still the switch! If I put it into sport the illuminated/highlighted "S" light goes out when I take my hand off the stick. If I press it back it lights up. I have also had one instance of the car sticking in first and I had to stop the car, switch off and re-start before it cleared. I also have had sporadic full PRNDS when engaging reverse. As I am about to put the car in for the lower control arms I think that I might as well get the F125 switch changed. Trouble is even the flat 10 pin plug versions seem hard to get hold of according to my garage.....

But if it IS the switch mechanism why did cleaning the connector seem to cure it?

[Adrian E]

It probably just improved things a bit and disguised the symptoms for a while.

I don't see that acquiring the 10 pin switch should be any trouble at all - personally I'd go to TPS myself and order it, as you'll get a better price than the garage will and you can ensure you order it ahead of time so you know it's in your hands.

It may well be on backorder from Germany, but that usually takes less than 3 days to arrive to your local TPS - worst case scenario a week.

If Audi can't order it, it's a generic ZF part in any case I believe.

[David's8]

Thanks for that Adrian, The garage was getting me a quote through TPS and it appeared to be available on back order but I might see if TPS will quote me direct. To be fair my garage usually just charges me cost + VAT for parts.