Owner's Manual for the vehicle. With a quick reference ... - E38.org

168nRemote control
365de017
365de018
380us014
Changing battery
Replace the battery when the message
"REMOTE KEY BATTERY" appears in
the Check Control. The LED no longer
lights up when a button is pressed and
it is no longer possible to lock the car
using the remote key.
Install only a battery of the type that is
specified in the battery compartment
(CR 2016). Be sure the battery is installed
in the correct position.
1 Use a screwdriver to lift the cover at
the recess (arrow)
2 Loosen the two screws (arrows) and
remove the cover.
The battery type and its installation position
are stamped into the base of the
battery compartment.
Return used batteries to a recycling
point or to your authorized
BMW center.<
New transmitter
If you place a new transmitter into service
(either a replacement or an additional
transmitter), it must be initialized:
1 Enter the vehicle and close the
driver's door
2 Briefly (max. 5 seconds) turn the
ignition key to position 1 in the steering
lock, then return it to position 0
3 Remove key; press and hold down
button 1 (see illustration). Maintain
pressure on button 1 while rapidly
pressing button 2 three times in succession
within a period of 10 seconds