5 Series E39 528i (M52) SAL
Press button 2 and hold in:
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Central locking system, side windows and sliding roof open ("Convenient opening").
Press button 3 briefly:
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Luggage compartment lid opens.
Press button 3 and hold in:
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Panic Mode (on US models) is active again.
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Automatic luggage compartment lid closing.
Individual functions may deviate from those described above; this depends on the respective country-specific
encoding and the settings made via Car & Key Memory.
6.2 Signal processing
Signal processing is by means of a microprocessor on the printed circuit board in the key casing. This
microprocessor
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evaluates the key actuations,
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generates the new key code,
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relays the key code,
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controls transmitter output stage,
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monitors power supply (storage battery) for radio transmitter.
1 - EWS transponder
2 - Microswitch for luggage compartment lid
3 - Microswitch "Locking"
4 - Quartz for microprocessor
5 - Microswitch "Unlocking"
6 - Microprocessor
7 - Coiled aerial
The signals transmitted via the transmitter output stage are radiated via an aerial integrated on the printed circuit
board. The carrier frequency is 433.92 MHz (ECE) or 315 MHz (US), depending on country-specific registration.
When the system is being initialized, a key code is created and stored in the microprocessor of the radio transmitter.
Following every key actuation at the radio transmitter, a new key code is transmitted (changing code). The codes are
recalculated according to a specified process so that the receiver module can differentiate reliably between its own
and external radio transmitters.
Note:
Each transmitter can "lose" its key code if, e.g., someone inadvertently actuates buttons in the initialization sequence
outside the car. In this case, all radio transmitters belonging to the car must be re-initialized.
6.3 Power supply
The new radio transmitter does not use regular batteries but rather a rechargeable vanadium-lithium storage battery.
New radio transmitters will be supplied with charged storage batteries.
SBT New radio remote control all models beginning 09/99
BMW AG - TIS
22.02.2013 13:01
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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