Had my Q3 for a month now & I have a problem with the Rad fans running & staying on after shutting the engine down. Did a forced Regen about a week ago, & got the soot level down to 0.52 grams it was 19 grams before regen. Checked again yesterday & calculated was 12.6 grams but measured was 20.2...
...battery, place key in ignition & initiate reprogramming sequence.
3. Sequence = turn key to "ON" position only, wait 10 seconds. Repeat 5 times.
* Press the unlock buttons, both on the fob while in the ignition & the door button.
Held each for 5-10 seconds while key was "ON", both...
Key has lost communication with the Immobilizer.
This might help. http://www.vwaudiforum.co.uk/forum/showthread.php/132422-Fault-code-17978-quot-Engine-blocked-my-immobiliser-HELP!
It's worth investing inVagcom/VCDS if you are intending to keep the car. Saved me a small fortune over the years with the many VAG cars that I've owned, & several members of this forum too. Coolant Temp Sensor has 2 seperate outputs i.e, one for the gauge & one for the ECU. It's a very common...
Coolant temp sensor would be my 1st suspect followed the MAF sensor, & finally the camshaft position sensor. All of these can be at fault without throwing a fault code. Use genuine parts too as "buy cheap buy twice" is normal for VAG engine sensors.
VCDS/Vagcom is really useful, & it does many things, but you can't remap with it. I've owned 9 different VAG cars, & VCDS has paid for itself many times over.
VCDS/Vagcom can't do remapping. My remote worked fine as did the alarm just the immobiliser was disabled. I wouldn't think an A4 B6 would be much of target for a car thief.
It's not as simple as just buying a cable, you'll need specialist software plus the correct OBD2 cable to be able to flash the ECU. When I had my A4 PD 130 I bought a mapped ECU on Ebay with the immobiliser disabled which meant it was plug & play. I have VCDS so was able to enable the...
I have a 3rd party cable & a registered copy of VCDS ($99 on Ross Tech site) which I've had for about 10 years without any problems. Saved me a small fortune.:thumbs up:
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