Follow Me Home

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Communication Flow - Follow Me Home Feature

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Identifying Follow Me Home Circuit Diagram

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The function activates the dipped beam when the car key has been removed from the ignition switch, and when the driver's door is opened and the dipswitch is pulled to its rear position, "headlamp flasher". When the driver's door is then closed again (within 30 seconds), the dipped beam will be switched on for a preset time.

"Follow me home" means that the dipped beams are used when no other light sources are available than the car's. The dipped beam function is active for a certain time after the car key has been removed from the ignition switch and the driver's door has been closed. The period of time can be programmed in DICE (20-50 seconds).

However, a number of conditions must be fulfilled before DICE can activate the function.

DICE detects with pin 7 whether the key has been removed from the ignition switch. DICE then receives a bus message from TWICE about the status of the driver's door (OPEN). When the dipswitch (215) is then activated, power is supplied to pin 41 in DICE.

The final condition that must be fulfilled is a bus message from TWICE about the status of the driver's door (CLOSED). The dipped beam relay is then grounded via pin 4 on DICE for a preset period of time (20-50 seconds) and the dipped beams are turned on.

IMPORTANT: When changing a bulb, use one with the right output otherwise the components could be damaged.