User Manual

Page 1 of 2 Copyright  1999 TRW Automotive Electronics

Author: Roger Lee

Date: 10/11/99

Updated: 10/11/99

Operation of the 20TN-1 Radio Key

Vehicle Lock and Security System Arm

Standing near the vehicle, depress for approximately one second the button marked

with a closed padlock symbol.

Vehicle Unlock and Security System Disarm

Standing near the vehicle, depress for approximately one second the button marked

with an open padlock symbol.

Trunk Unlock

Standing near the vehicle, depress for approximately one second the button marked

with a symbol representing a car with an open trunk.

Panic Alarm

Standing near the vehicle, depress and hold any button. After a short delay, the car

alarm will sound and continue to sound, even when the depressed button is released.

Depressing one of the buttons again for one second will stop the alarm.

Battery Changing

1. Remove the 20TN-1 back cover by inserting a suitable tool into the hole on the

side of the unit and gently levering the cover out.

2. Remove the 20TN-1 battery, by pulling back the white plastic battery

retaining clip and using a suitable non-conducting tool inserted in the recess

provided to prise out the battery.

3. Fit a new battery by inserting it, positive (+) side uppermost, under the metal

clips in the battery compartment and pressing on the opposite edge of the

battery to push it under the white retaining clip.

4. Refit the 20TN-1 cover by engaging the two key cover lugs into the key head

and pressing the cover on the opposite edge until cover latch engages.

5. When a battery is replaced, the 20TN-1 fob loses synchronisation with the

vehicle. To re-synchronise the key, stand near the vehicle and press either the

lock or unlock button (but not both) four times over a period of two seconds.

PAGE 1
Author: Date: Updated: Roger Lee 10/11/99 10/11/99 Operation of the 20TN-1 Radio Key Vehicle Lock and Security System Arm Standing near the vehicle, depress for approximately one second the button marked with a closed padlock symbol. Vehicle Unlock and Security System Disarm Standing near the vehicle, depress for approximately one second the button marked with an open padlock symbol.
PAGE 2
Teaching a Vehicle to Recognise a Key If a new immobiliser unit is fitted in a vehicle or a new 20TN-1 is required because a key has failed or has been lost, the immobiliser must be taught to recognise the vehicle key(s). This can be performed only at the Lucas manufacturing plant, the Saab assembly plant or an approved Saab service centre. Note: The 20TN-1 will work with a Lucas 16AS, 23AS or 32AS receiver. Neither receiver has user controls.