Eesti BMW Klubi

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Folding In Mirrors

The electric motor drive is used to fold in the outside mirrors (special option) in the opposite direction of driving.

The button to fold in the mirrors is located in the switch block on the driver's door. The button signal is routed via the P-bus to the peripheral modules in the doors. Depending on the position of the mirrors, they are then folded in or out accordingly.

In addition to the external design differences, the mirrors for the production vehicles model E38/E39 from the mirrors for the model E39 M5 (motorsports design).

A microswitch is integrated in the mirrors the production vehicles that switches a ground signal to the relevant peripheral module when a mirror is folded in or out by hand or by impact. The microswitch is necessary as folding the mirror in or out uncouples the mirror mechanism from the fold-in motor. If a mirror which has been mechanically uncoupled is activated by the button being pressed, the fold-in motor will move the mirror in the fold-in direction until the microswitch registers the mirror being engaged. The maximum activation time of the motor is 15 seconds.

Thanks to a modified mirror mechanism, this microswitch is no longer necessary for the mirror of the E39 M5.

Since the mirror fold-in motors block when operated, thermal overloading is possible if operated frequently. In order to avoid overloading, a repeat lockout is provided which blocks the fold-in motors for 3 minutes after 6 operating attempts within 1 minute.