Diagnostic BMW 525I 1997 E39 Central Body Electronics ZKE Manual

BMW 525I 1997 E39 Central Body Electronics ZKE Manual 525i 1997 E39 BMW BMW https://www.carmanualsonline.info/img/1/5439/w960_5439-0.png BMW 525I 1997 E39 Central Body Electronics ZKE Manual

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BMW 525I 1997 E39 Central Body Electronics ZKE Manual Driver’s Seat (E38/E39)
Principle of Operation
Each motor for seat adjustment contains a micro-processor (called a Ripple Counter) that
receives a digital signal from the seat control module for mot

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BMW 525I 1997 E39 Central Body Electronics ZKE Manual Passenger’s Seat (without memory)
Principle of Operation
The passenger seat control switch is purely a mechanical switching module that activates
the passenger seat motors without position monitorin

Page 64 of 80

BMW 525I 1997 E39 Central Body Electronics ZKE Manual Principle of Operation
The  lumbar  support  system  can  be  operated  at  any  time  regardless  of  key  position.  The
four position circular rocker switch provides power switching to operate the

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BMW 525I 1997 E39 Central Body Electronics ZKE Manual Principle of Operation
To  activate  this  feature,  the  ignition  must  be  in
the KL R or KL 15 and press the switch located
in the Center Console Switch Center (driver and/
or passenger front seat

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BMW 525I 1997 E39 Central Body Electronics ZKE Manual 68
Central Body Electronics ZKE III
Center  Console  Switch  Center  (SZM): From  1999  MY  E38,  E39  and  E53  vehicles  are
equipped  with  a  SZM  to  control  the  front  seat  heating  and  prov

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BMW 525I 1997 E39 Central Body Electronics ZKE Manual Rear Window Roller Sunblind Operation
The roller sunblind is activated by momentarily pressing and releasing (one touch) the sun-
blind rocker switch in the SZM. The SZM activates the motor in the app

Page 74 of 80

BMW 525I 1997 E39 Central Body Electronics ZKE Manual Principle of Operation
Control logic (example E38) includes:
• Servotronic control electronics active with KL R being switched "ON" - ensure  no delay
in operation if engine is started and vehicle i

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BMW 525I 1997 E39 Central Body Electronics ZKE Manual Battery Status
The  GM  monitors  KL  R  on  a  dedicated  circuit.  If  the  ignition  is  switched  on  and  detected
via the KL R circuit but the GM does not receive KL R status via the K Bus, the