Vehicle Key with Remote Sender - Activation Malfunction

Boxster

4/97

9662

Binder - Group 9, Electrics

12/23/97

Vehicle Key with Remote Sender

Vehicle Type
Boxster

Model Year:
As of 1997 (V)

Concern:

The following problems may occur when activating the remote sender on cars with option M535:

- No function of the remote sender

- control lights do not flash

- central locking system does not work

Information:

Possible causes for the above listed failures are:

1. Discharged battery.

The cause could be a discharged battery in the vehicle or in the remote sender. A discharged battery will not flash the LED in the key head when the remote is activated. If necessary replace the battery in the key head.

2. The remote sender is out of range of the receiver.

If unclear about the operating range of the remote sender, stand next to the vehicle and operate the sender. Note that a reduced range indicates a weak battery in the remote sender.

If the remote sender has been activated more than 256 times and less than 1024 times with the receiver out of range or while the vehicle battery is disconnected the unit must be resynchronized as follows:

- Switch on the ignition (ignition key must have the correct transponder).

- Switch off the ignition.

- Remove the key and press the remote sender button within 6 seconds after the ignition key has been removed

The activation counter will then be reset to zero.

3. The "Energy Saving" mode is activated.

To reduce the current draw on the vehicle battery, the receiver is automatically switched off if the vehicle is not used for 5 days (120 hours) since the last time the ignition was switched on and off. At this point the vehicle can only be opened mechanically with the key. The remote sender function is restored once the ignition is switched on again.

4. Atmospheric interference from other transmitters.

Intermittent interference is possible due to the many users of this frequency in the automotive industry.

5. Defective remote sender or receiver.

If the remote button is depressed and the LED on the remote does not illuminate, either the battery in the remote sender is discharged or the remote sender is defective.

If the control light in the center of the dash does not blink after depressing the button on a functioning remote sender, either the vehicle battery is discharged or the alarm/immobilizer control unit is faulty. Before replacing the control unit, ensure that the 15 A fuse on the alarm/immobilizer control unit is faulty. Before replacing the control unit, ensure that the 15 A fuse on the alarm/immobilizer control unit is functional. The fuse is replaceable and externally accessible. A damaged fuse is a indication of a short in a monitored alarm system component, for example, the alarm horn.

Parts:

Part Number Description
999 611 106 00 Battery 3V (lithium CR2032)
available locally 15 A fuse