501-09 Rear View Mirrors: Description And Operation (page 5 of 10)

Memory Recall 

On vehicles with memory recall, each adjustment motor in the exterior mirrors incorporates a feedback potentiometer, 
which outputs a position signal to the seat control module. The positions of the exterior mirrors, together with that of the 
driver seat, are stored in the seat control module in two ways: 
 

Manually, using the memory store and reset buttons.  
Automatically, for the lazy entry feature, each time the ignition switch is turned from position II to position I.  

When the ignition switch is in position I or II, pressing the memory store button (M), then pressing reset button 1, 2, or 3 
within 5 seconds stores the current positions of the exterior mirrors and the driver seat in the memory of the seat control 
module. A single chime sounds and a memory stored message appears in the message center (if fitted) to confirm that 
the operation was successful. 
 
Stored positions can be recalled when the vehicle is either stationary or moving. When the vehicle is stationary, a 
momentary press of a memory reset button causes the exterior mirrors and driver seat to move to the positions stored 
against that button, provided the driver door is open or the ignition switch is in position I or II. When the stored positions 
are reached, a double chime sounds, and a memory recalled message appears in the message center (if fitted), to 
confirm that the operation is complete. During transition to the stored positions, movement of the exterior mirrors stops 
immediately if the exterior mirror control switch is pressed (any direction). 
 
To prevent inadvertent operation when the vehicle is in motion, the memory reset button must be pressed and held for the 
exterior mirrors to move. 
 
During a memory recall, the seat control module determines a mirror adjustment motor has stalled if there is no change in 
the signal from the related feedback potentiometer for more than 100 ms. If a stall condition is detected, the drive to the 
applicable adjustment motor is cancelled for the remainder of the memory recall operation. The adjustment motor can be 
activated again by pressing the exterior mirror switch in the appropriate direction until the required position is reached. 
 
Each time the ignition switch is turned from position II to position I, the seat control module automatically stores the 
positions of the exterior mirrors and driver seat, together with the identity of the ignition key. If the lazy entry feature is 
enabled, when a remote control is used to unlock the vehicle, the seat control module compares the stored positions of 
the exterior mirrors and driver seat, for the associated ignition key, against the current positions. If necessary, the seat 
control module then moves the exterior mirrors and driver seat to the stored positions. If the lock button on the remote 
control is pressed, during lazy entry movement of the exterior mirrors or driver seat, all movement stops immediately. 
 
The locking status of the doors is transmitted to the seat control module from the CJB on a Local Interconnect Network 
(LIN) bus. The lazy entry feature can be enabled and disabled in the customer settings menu. For additional information, 
refer to   

Instrument Cluster

 (413-01 Instrument Cluster) 

Exterior Mirror