Seat Normalization Loss (91.29/54A)

Publication date: 2002-11-04
Reference number: 91.29/54A

SEAT NORMALIZATION LOSS

TECHNICAL SERVICE BULLETIN

Reference Number(s): P-B-91.29/54a, Date of Issue: November 4, 2002

MERCEDES-BENZ:	Model 230, Model Year 2003
GROUP:	91 - Seats, Supplemental Restraint System (SRS)

Superceded Bulletin(s): P-B-91.29/54, Date of Issue: November 1, 2002

NOTE: This bulletin supersedes: P-B-91.29/54 dated November 1, 2002.

SUBJECT

Seat Normalization Loss

SERVICE INFORMATION

If you encounter instances in the R230 model where the left or right seat adjustment does not recall the stored memory positions, the easy entry and exit feature is inoperative, and or the rear storage area seat convenience feature is inoperative, perform the following repair procedure.

Using STAR Diagnosis normalize the affected seat.
NOTE: Enter into the following STAR Diagnosis menus in order to perform seat normalization. Control Unit Groups -> Seats & Doors -> Electric Seat Adjustment Front Left / Right -> Maintenance Operation, Control Module Adaptations -> Control Unit Adaptations -> Normalize Seat Adjustment.

NOTE: When normalizing the seat function, all 6 adjustments must be performed. Seat Cushion Depth, Head Restraint, Forward/Backward, Height, Height at Front, and Backrest adjustment. Carefully read the Normalization requirements in order to normalize the seat in the correct sequence.
Using STAR Diagnosis adapt the obstruction protection.
NOTE: Enter into the following STAR Diagnosis menus in order to perform seat normalization. Control Unit Groups -> Seats & Doors -> Electric Seat Adjustment Front Left / Right -> Maintenance Operation, Control Module Adaptations -> Control Unit Adaptations -> Adapt Obstruction Protection. Carefully read the requirements associated with this process in order to properly adapt the seat.
If after STAR Diagnosis normalization and adaption, the seat still continues to lose normalization, replace the seat control module for the affected side. Refer to WIS document AR91.29-P-0008R.
Using STAR Diagnosis normalize the new seat control module. Refer to instructions listed above.
Using STAR Diagnosis erase stored fault codes.

PARTS INFORMATION

Qty.	Part Name	Part Number
1	Seat Control Module Left	230 820 43 26
1	Seat Control Module Right	230 820 44 26

IN CASE OF WARRANTY

Operation:

Step 1: Short test, perform (54-1011)
If necessary: Step 2:
1. Driver seat cushion, R & R (91-5008)
2. Passenger seat cushion, R & R (91-5028)
3. Power seat control module-drivers seat, replace (seat cushion removed) (91-6687)
4. Power seat control module-pass. seat, replace (seat cushion removed) (91-6692)
5. Short test, perform (54-1011)

WARRANTY INFORMATION

Damage Code	Operation Number	Labor Time (hrs.)	Model Indicator (s)
Step 1: 82475	54 1011	.3 hrs.	00
	If necessary
Step 2: 82475	91 5008	1.3 hrs.	R1, R2
	91 6687	.7 hrs.	R1, R2
	And/or
	91 5028	1.3 hrs.	R1, R2
	91 6692	.7 hrs.	R1, R2
	And
	54 1011	.3 hrs.	00