|Quote, originally posted by V10NRB »|
|Today - The doors are working BUT he boot is still not working, I press the VW badge and nothing opens.|
OK, here's my best attempt at "troubleshooting by long distance using an Ouija board" - a reckless task at the best of times:
1) Replace the key battery. This is really cheap and simple to do (battery costs ₤2.50 if you buy it at a big electronics superstore or a toy store, you can replace it yourself without difficulty). In theory, the Phaeton should give you a message in the instrument cluster display if the key battery is low, but because it is so simple and inexpensive to replace the battery, just do that first, to rule out one variable.
2) Try locking or unlocking the car doors with the remote (the one with the fresh battery) from each of 8 different compass points all around the car, whilst standing about 3 yards away. In other words, from the N, S, E, W quadrants, as well as NE, NW, SE, SW. This is a quick and simple way to test out both the external antennas and the portion of the KESSY (Keyless Entry and Start System) controller (controller 05, also called the Access and Start Controller).
3) Critically evaluate the state of charge of the vehicle power supply battery (the left hand battery). As we all know, the first hint we get that the left hand battery is at less than optimal charge status is flaky behaviour of other systems in the car, keyless access included.
4) Do a diagnostic scan of the car to reveal what fault codes are present. Of special interest to you are any fault codes related to the Access and Start Controller (05), the Immobilizer (25), and any fault related to doors or handles.
If I had to place a bet - my money would be on a slightly discharged vehicle power supply battery (left battery).
Let us know what you find.
How to open the key to change the battery
The battery itself
The OEM battery is a Panasonic CR 2032. This is a 3 volt lithium battery. Equivalent part numbers from other companies include DL2032, BR2032, KL2032, L2032, ECR2032, 5004LC, KCR2032, E-CR2032, KECR2032, SB-T15, L14. Important note: This is the same battery as is used in a 'Tamagotchi' virtual pet, so, if you have a child under 12 in your house, you can scarf the battery out of their Tamagotchi.
Antennas needed for Keyless Entry
Note that the reception range of the interior and exterior antennas does not overlap. There are two different and distinct zones - inside and outside.
Also be aware that the exterior door handles themselves function as antennas.