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 if the remote key memory for the seat and door mirrors is to be active 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 setting 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 market in Japan has Remote Keyless Entry (RKE) regardless of if the vehicle is equipped with keyless entry system or not. When the vehicle is not equipped with keyless entry system, the Remote Keyless Entry (RKE) communicates directly with Central electronic module (CEM). If the vehicle is equipped with keyless entry system, the Remote Keyless Entry (RKE) communicates via Keyless Vehicle Module (KVM).
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.
When you unlock the vehicle, the power seat module (PSM) uses the information about which remote key locked the vehicle. This is done to choose the correct remote memory position, that is, the seat position that the driver set the last time for this remote key. When the door is opened, the seat starts to move to the programmed remote memory position.
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.
After you have unlocked the vehicle, the stored seat position is updated to the present seat position continuously for the current remote key until the car is locked. Cars with software from after structure week 2014w48 stop updating the stored seat position after the car has been standing with the ignition off for 30 minutes even if the car has not been locked. This is to reduce the risk that drivers of the same car change each other's stored seat position when the car is not locked between each change of driver. Storing of remote memory position for the mirrors for driver door module (DDM) and passenger door module (PDM) takes place in the same way as for storing the seat position.