Normally:
If you unplugged the original clocks and put the new clocks in and tried to start the car that will give a fault code with the immobiliser that can be cleared using the lead after putting the original clocks back in. After putting the original clocks in the car it should start as normal but because you disconnected the clocks you will get the other errors that cant be cleared. The only way to get the lights out and get the steering to work properly is to go through the follow proccedures using the official VAGCOM lead:
Adaptation
Basic Setting
Sensor for Steering Angle (G85)
Prerequisites:
- Start the vehicle.
- Turn the steering wheel one turn to the right and one turn to the left.
- Drive in a short distance straight line on a level surface at a speed not higher than 20 km/h.
- If the steering wheel is straight during the test drive then stop the vehicle with the wheels pointed straight.
- Ensure that the steering wheel is not moved again.
- Keep the engine running and do not switch off the ignition.
- System voltage at least 12.0 V.
[Select]
[03 - Brake Electronics]
[Measuring Blocks - 08]
Group 004
[Go!]
Check field 1, the value has to be between -1.5 and +1.5 °.
[Done, Go Back]
[Coding-II - 11]
OR (if Coding-II is not available)
[Security Access - 16]
Enter 40168, to enable the basic setting.
[Do it!]
[Basic Settings - 04]
Group 060
[Go!]
After a successful basic setting, field 2 should say "OK".
[Done, Go Back]
[Close Controller, Go Back - 06]
Note: After successful basic setting, the Steering Limit Stop needs to be adapted too.
Lateral Acceleration Sensor (G200)
Prerequisites:
- System voltage at least 12.0 V.
[Select]
[03 - Brake Electronics]
[Measuring Blocks - 08]
Group 004
[Go!]
Check field 2, the value has to be between -1.5 and +1.5 m/s².
[Done, Go Back]
[Coding-II - 11]
OR (if Coding-II is not available)
[Security Access - 16]
Enter 40168, to enable the basic setting.
[Do it!]
[Basic Settings - 04]
Group 063
[Go!]
Activate the Basic Setting.
[ON/OFF/Next]
After a successful basic setting, field 2 should say "OK".
[Done, Go Back]
To make sure the basic setting was succesful, check the sensor again.
[Measuring Blocks - 08]
Group 004
[Go!]
Check field 2, the value has to be between -1.5 and +1.5 m/s².
[Done, Go Back]
[Close Controller, Go Back - 06]
Brake Pressure Sensor 1 (G201)
Prerequisites:
- System voltage at least 12.0 V.
[Select]
[03 - Brake Electronics]
[Measuring Blocks - 08]
Group 005
[Go!]
Check field 1, the value has to be between -8.0 and +8.0 bar.
[Done, Go Back]
[Coding-II - 11]
OR (if Coding-II is not available)
[Security Access - 16]
Enter 40168, to enable the basic setting.
[Do it!]
[Basic Settings - 04]
Group 066
[Go!]
Activate the Basic Setting.
[ON/OFF/Next]
After a successful basic setting, field 2 should say "OK".
[Done, Go Back]
To make sure the basic setting was succesful, check the sensor again.
[Measuring Blocks - 08]
Group 005
[Go!]
Check field 1, the value has to be between -3.8 and +3.8 bar.
[Done, Go Back]
[Close Controller, Go Back - 06]
Longitudinal Acceleration Sensor (G251)
Prerequisites:
- System voltage at least 12.0 V.
[Select]
[03 - Brake Electronics]
[Measuring Blocks - 08]
Group 004
[Go!]
Check field 4, the value has to be between -1.5 and +1.5 m/s².
[Done, Go Back]
[Coding-II - 11]
OR (if Coding-II is not available)
[Security Access - 16]
Enter 40168, to enable the basic setting.
[Do it!]
[Basic Settings - 04]
Group 069
[Go!]
Activate the Basic Setting.
[ON/OFF/Next]
After a successful basic setting, field 2 should say "OK".
[Done, Go Back]
To make sure the basic setting was succesful, check the sensor again.
[Measuring Blocks - 08]
Group 006
[Go!]
Check field 1, the value has to be between -1.5 and +1.5 m/s².
[Done, Go Back]
[Close Controller, Go Back - 06]
The problem I can see is in the changing over of this chip. I dont know of any chip that is changeable on the cluster - it would make a joke of the immob system if it could be defeated by just swapping something over. I'd check that the chips are in the correct clusters & none of the pins are bent or broken etc.
I've swapped clusters over without having the immob issue, as when put my original back in the car started fine.