Car Memory/Key Memory
Vehicle/Key Memory
The Vehicle/Key Memory feature provides the flexibility of allowing the owner to customize certain functions of select vehicle systems and automatically identifies users of the vehicle by a key identification signal provided by the remote keyless entry system (FZV).
Vehicle & Key memory is marketed as a combined feature but is actually two separate functions of the select vehicle control systems.
Vehicle Memory: The owner is provided with a list of available system functions that can be customized to their liking. Prior to delivery, the DISplus or MoDiC is used to encode the owner's chosen selections into the appropriate control modules.
These choices become a permanent function of the control module, and can only be changed by re-encoding with the DISplus or MoDiC at a BMW Center.
This feature has been available for some time via the ZCS Conversion Feature but has never been fully utilized or officially presented to the vehicle owner as a feature of their vehicle.
Key Memory: This feature provides the added convenience of identifying users of the vehicle whenever a lock or unlocked signal is generated via the individual FZV keys. A maximum of four FZV keys can be used with the Key Memory feature.
Each of the four keys generate a unique key identification signal (key number) that is transmitted simultaneously with the lock/unlock signals to the General Module. Key Memory does not respond to Lock/Unlock requests from the drivers door lock.
Most of the key memory functions require the vehicle be configured using the "KEY MEMORY" function of the DIS or MoDiC. However, there are a few features that store settings automatically without configuration such as IHKA blower speed and temp setting. The key ID signal alerts the GM to communicate with select control systems over the K Bus to store (when locked) or reset (when unlocked) certain driver adjustable settings.
There are features that function as both a Car & Key Memory feature.
Example; the Automatic Seat Adjustment feature is encoded as a Car Memory Function with the following possibilities:
- When unlocking,
- When opening a door after unlocking
- Or not active at all.
If active, the seat positions are stored and reactivated by the Key Memory function for individual users of the car.
System Components
Remote Key:
Features:
- 3 volt lithium battery (commercially available CR 2016) is used as the power supply for the key transmitters.
- An EEPROM is used to store the key data. The data is not lost when the battery is replaced and initialization is not required.
- The key incorporates an LED that signals the operator of signal transmitting, key initialization status and key self test indication.
- The keys are delivered with a four color label sheet containing different colored labels for each of the four possible FZV keys.
This is helpful to differentiate the FZV keys during initialization preventing the possibility of mis-assigning the key ID which would change the encoded Key Memory functions.
Model Year 2000 Key
Visual Changes:
- New appearance with blue and white BMW roundel.
- New button arrangement (larger buttons) with sequential operation (enhanced operating convenience). Functions the same as the previous key.
- Rechargeable battery replaces replaceable batteries. Charged by EWS ring antenna.
- The key housing is encapsulated and can not be opened.
- The LED has been omitted.