Transponder problem... need help

fritzvis · 16-01-18, 06:37 PM

Hi Guys,
I'm knee deep in sh#t... I installed remote key on my 80 cab model 2000 tdi. I used the new keyfob without transponder a few times just to put power on system to open the roof, not to start the car... since then a warning light was blinking on dash with car and key picto... now I put the transponders in new keyfobs but car won't start... I've put transponders back in OEM keys but no result

engine turns over... kicks in but immediately cuts off... picto still blinking on dash

need help...

John. · 16-01-18, 06:59 PM

As you probably suspect, it's like it isn't now recognising the transponder chip..........maybe the control unit is unsynchronised with the "reader" at the column??
Maybe disconnecting the battery for a few minutes might set things in line so to speak?
Shouldn't make it any worse ! Worth a try maybe.

fritzvis · 16-01-18, 07:04 PM

Hey John,
Thx for the reply... tried that but no luck

Since I used the new keyfobs without transponder the warning light has been blinking... and car turns over for a second and immediately stalls...

John. · 16-01-18, 07:24 PM

Maybe just leaving the ignition ON for 15 minutes or so might resynchronise it ??

fritzvis · 16-01-18, 07:39 PM

Hey John,

Tried that for about 12min but no luck...

Damn...

John. · 16-01-18, 07:44 PM

That's me out of ideas !.........other than maybe taking out the transponder and holding it in different positions around the ign barrel area........but if it was reading it before in the old fob then I doubt this will work.

fritzvis · 17-01-18, 05:59 PM

Yessssss succes

I removed the 15A fuse of the immo (n•19) in the fusebox and reinstalled it... well what do you know... immo warning light went out and car started right up

I'm a happy camper

John. · 17-01-18, 06:15 PM

Nice!

16-01-18, 06:59 PM	#2
John. 4 ring whore! Classic Audi Club Member Join Date: Mar 2011 Location: Scottish Borders. Posts: 7,520	As you probably suspect, it's like it isn't now recognising the transponder chip..........maybe the control unit is unsynchronised with the "reader" at the column?? Maybe disconnecting the battery for a few minutes might set things in line so to speak? Shouldn't make it any worse ! Worth a try maybe.

16-01-18, 07:04 PM	#3
fritzvis Grown up member Join Date: Nov 2017 Location: Belgium Posts: 44	Hey John, Thx for the reply... tried that but no luck Since I used the new keyfobs without transponder the warning light has been blinking... and car turns over for a second and immediately stalls...

16-01-18, 07:24 PM	#4
John. 4 ring whore! Classic Audi Club Member Join Date: Mar 2011 Location: Scottish Borders. Posts: 7,520	Maybe just leaving the ignition ON for 15 minutes or so might resynchronise it ??

16-01-18, 07:39 PM	#5
fritzvis Grown up member Join Date: Nov 2017 Location: Belgium Posts: 44	Hey John, Tried that for about 12min but no luck... Damn...

16-01-18, 07:44 PM	#6
John. 4 ring whore! Classic Audi Club Member Join Date: Mar 2011 Location: Scottish Borders. Posts: 7,520	That's me out of ideas !.........other than maybe taking out the transponder and holding it in different positions around the ign barrel area........but if it was reading it before in the old fob then I doubt this will work.

17-01-18, 05:59 PM	#7
fritzvis Grown up member Join Date: Nov 2017 Location: Belgium Posts: 44	Yessssss succes I removed the 15A fuse of the immo (n•19) in the fusebox and reinstalled it... well what do you know... immo warning light went out and car started right up I'm a happy camper

17-01-18, 06:15 PM	#8
John. 4 ring whore! Classic Audi Club Member Join Date: Mar 2011 Location: Scottish Borders. Posts: 7,520	Nice!