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928
Wheels, Tires, Alignment
44
Removing and installing RDK control unit
Notes
The RDK control unit is in the footwell on the driver's side, above the base of the storage compart-
ment. On right-hand drive cars, the RDK control unit is attached to the right side panel in the driver's
footwell.
When the RDK control unit is removed or installed, the ignition must be switched off.
Remove the storage compartment (4 retaining nuts).
From software status R 02 on, the RDK control unit has an event memory for tire pressure losses.
This was introduced during the 1991 model year/amended
part number index for control unit. Any
tire pressure losses on the last 8 occasions that the car was driven can be read out with the 9288 sys-
tem tester (Page 44 - 302).
Removing
Unscrew and remove the screws holding the
RDK control unit. Remove control unit with
plug from holder, release the plug by applying
pressure to the retaining clip and pull it off the
control unit.
*
:
'._
Installing
Proceed in the opposite order of work.
Make sure that the plug locates correctly in
the control unit. After installing, perform the
quick RDK test (page 44 - 28).
After this, read out the fault memory with the
9228 system tester (menu 1). Erase any faults
stored in the memory.
Note
When attaching the control unit, first push it
into the clips at the rear. Make sure that no
wiring is trapped between the control unit and
the holder.
0
Removing and indalling
RDK control unit
44 - 33
Printed in Germany - xxv,1990
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