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This will explain how to buy a new (or used) key fob and program the remote to the car.

It is worth mentioning that programming the immobilizer is not really a thing you can do you self unless you have all the required codes which you properly don’t have do to the way VW manages these now a days.

Before you go on to ebay or else where to find a new key there is a few tings that you need to know. Two numbers must match the key you are searching for, that being:

1. Remote part number.
   This number indicated what frequency the key uses e.g:
   • HLO 1K0 959 753 A – 434MHz for mobel PR-5D1
   • HLO 1K0 959 753 B – 315MHz for model “J..”: PR-5D3
   • HLO 1K0 959 753 C – 315MHz for model “ROK”: 5D5
   • HLO 1K0 959 753 D – 315MHz
   • HLO 1K0 959 753 G – 434MHz
2. The type of immobilizer
   This is a number similar to: 5FA 009 263-10

Key for a VW Touran

VW key not for a VW touran but with easy readable part numbers

Programming

This is only a guide to program the remote control part of the key e.g the part with the 3 buttons (on the right below) – NOT the immobilizer with the metal key (on the left).

VW Generic Programming of Remote Controls

1. Place your first key into the ignition and turn to the second notch (do not start the car)
2. Now close the door and place your second key into the handle lock
3. Turn the key to the lock position and let it spring back to the central position.
4. Hold down the Lock button on your new remote, you may hear a bleep from the car
5. Now unlock the car using the key in the barrel and remove, then take your first key out of the ignition
6. Close the door
7. Your remote should now be coded

VCDS Procedure for matching radio-frequency remote controls

The VCDS matching guide is available here.

However this guide didnt quite work for me. I just wanted to add a single new (already used for another car, which type is on known to me other than it was a VW) key to the car but the procedure shown below didn’t allow me to save a 2 in the new value. If I pressed Test it will then just come back and allow me to Test again and not Save.

1. Place the key to program in the ignition and turn it (do not start the engine)
2. [46 - Cent. Conv.]
1. [Adaption - 10]
1. Read channel 1
2. Change the Test Value to 1 (The guide says it should be the number of keys but any value except one doesn’t work for me)
3. Hold in UNLOCK on the key until confirmation (in my case by the turn lights)
4. That’s it exit VCDS and turn of the car the remote should work now as well as your old one(s)

The Webasto Aux. Heater can be unlocked through VCDS. It may be come locked do to a broken water pump or simply failed starts.

The heater is locked if it reports the following fault code:

205935
00 0018 03 1232 thermo top v 12v /42 w 5kw

Saturday,05,November,2011,16:56:54:21701
VCDS Version: Release 10.6.5
                Address 18: Aux. Heat       Labels: None
Control Module Part Number: 1K0 815 071 R
  Component and/or Version: Zuheizer        050 2302
           Software Coding: 0000011
            Work Shop Code: WSC 01324 785 00200
                      VCID: 346C9F582EA0
1 Faults Found:

02251 - Heater Unit Locked
            000 -  -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 145
                    Mileage: 204126 km
                    Time Indication: 0

The heater can be unlocked through VCDS by:

1. Selecting the “Select Control Module” option and then
2. Select the Aux. Heater:
   
3. And then select the Adaptation:
   
4. The save 1 in channel 42.
1. That’s it.
2. Clear the fault codes and read them again and you should not get the heater locked fault any more.

The Webasto water pump can be tested through the VCDS program for VW cars.

The idea is to activate the pump when the car engine isn’t started, this way it will be possible to listen to the front right side of the bumper to determine if the pump is running.

The following steps will guide you through the steps to start the pump:

1. Connect the VCDS cable and turn the ignition key to power up the instrument panel
2. Open VCDS and click the “select control module” button
3. Then select “Aux. Heat”
   
4. Then select “Output tests”
   
5. The next dialog is a step-vice guide to activate different components associated with the aux heater
   
6. Press next and activate and go to the front of the car and listen:
1. If no new summing sound appears the pump is broken. Look at this post on how to replace the pump.
2. If a summing sound starts and stops again when continuing the guide the pump is most likely working correct.