Parktronic - Unusual System Operation
Date: February 1999Order No: P-SI-MBNA-54.65/47
Supersedes:
Group: 54
SUBJECT:
MODEL 140
IMPLAUSIBLE OPERATION OF PARKTRONIC SYSTEM
On vehicles equipped with the Parktronic system, customers may complain of unusual operation of the system while the vehicle is stopped, e.g. no obstacle is present in the monitoring area, 7 or 8 bars are visible in the graphic display and the acoustic warning sounds. This is caused by undesired vibration of the sensors in the bumpers, a harmonic "tuning fork" effect. To help resolve this condition, changes in production were introduced and a repair kit has been released.
Model 140 Sedan
Introduction of damper ring (silicone) into regular production:
Front bumper, calender week 18/96, from chassis end no. 324327
Rear bumper, calender week 31/96, from chassis end no. 336001
Instructions
Remove spacer ring, spring washer and nut. Replace with grooved spacer ring, damper ring and toothed nut.
Refer to repair instructions in WIS:
Front bumper, AR54.65-P-0001B.
Rear bumper, AR54.65-P-0002B.
Parts Information
Model 140 Coupe
Approximately calender week 30/97, from chassis end no. 385366
Instructions
Remove bumper, unclip spring clip, remove decoupling ring and sensor housing.
Installation is the reverse of the removal procedure.
Note:
Use decoupling ring included in the repair kit.
Parts Information
In Case of Warranty