Remote Operation Of Seats
The power seat module (PSM) has three memories to store the seat position of maximum three remote keys. There are also three memory positions that can be stored from the control panel. The control module can store a total of six different memory positions.
Vehicles with power seats with memory have a personal setting function. Using this function, the positions of the door mirrors and seat can be stored individually for each remote key (a maximum of three remote keys, i. e. remote memory positions 1, 2 and 3).
You can choose whether the remote key memory for the seat and door mirrors is to be active via menu option "Ignition key memory/Seat & mirror position" in the Infotainment Control Module (ICM) (3/281). If you activate or deactivate the remote key memory, the new setting does not take effect until the ignition has been switched off or on again. This performed is made per remote key.
The signal from the remote key is sent from the remote receiver module (RRC) (4/119) to the central electronic module (CEM) (4/56) when the vehicle is locked or unlocked. For vehicles with the keyless system, the signal from the remote keyless entry module (RKE) (4/119) via the keyless vehicle module (KVM) (4/93) to the central electronic module (CEM) (4/56). In addition, the central electronic module (CEM) identifies which remote key is used, stores this information and determines which information (see below) should be sent to:
- power seat module (PSM) (3/26)
- driver door module (DDM) (3/126)
- passenger door module (PDM) (3/127).
The central electronic module (CEM) (4/56) transmits information about which remote key locked the vehicle and which remote key unlocked the vehicle. This information is transmitted when the door is opened.
The seat position is first stored when the door is opened after unlocking. If the remote key that unlocked the car is different from the one that locked it, the previous position is stored, the seat position for the remote key being used is retrieved and the seat is adjusted accordingly. If the vehicle is locked with another remote key than that used to unlock it, no memory position is stored the next time the car is unlocked.
The remote memory positions for the door mirrors are stored for the driver door module (DDM) and passenger door module (PDM) in the following cases:
- when the remote key is removed from the ignition switch
- when a new remote key is activated.
When you unlock the vehicle, the power seat module (PSM) uses information on which remote key unlocked the vehicle in order to select the correct remote memory position, that is to say the seat position last set by the driver for that remote key. When the door is opened, the seat begins to move to the programmed memory position. If the vehicle is unlocked and has been since it was last driven, the seat only moves if a different remote key is inserted in the ignition switch.
Movement can be interrupted by pressing one of the buttons on the control panel. Movement to the stored memory position can be restarted by pressing the lock button on the remote key.
The seat will only move to the stored position when the vehicle is stationary. If the driver starts off during movement, movement will cease.