NHTSA ID Number: 10167567
Manufacturer Communication Number: LI91.10-P-054143
TSB/Document Date: 2019-11-12
Summary
1. Noises when operating electric seat fore/aft adjustment 2. Electric fore/aft adjustment nonfunctional 3. Adjustment is biased to one side, which bends the seat frame
Electric seat fore/aft adjustment nonfunctional
Topic number
LI91.10-P-054143
Version
3
Design group
91.10 Front seats
Date
07-10-2013
Validity
Model series 204, 207, 212 and 218 with fully electric seat adjustment
Reason for change
Added 204.0 and 204.9
Reason for block
Complaint:
1. Noises when operating electric seat fore/aft adjustment
2. Electric fore/aft adjustment nonfunctional
3. Adjustment is biased to one side, which bends the seat frame
Cause:
1. Frictional vibrations along fore/aft adjustment shaft
2. Motor detached owing to mechanical damage to electric motor retaining plate caused by the customer
3. One side of the seat adjustment drive shaft has come out
Remedy:
For models 204.3, 207, 212 and 218 the adjustment motor, shafts and electric motor retaining plate can be replaced:
(Contents of parts kit, see Pic12)
1. Move seat to forwardmost position
2. Remove seat cushion as per work instructions (Note: you do not have to cut the pnuematic lines as indicated in
work instructions (see Pic10) - take care not to pinch or kink the lines!)
3. Detach plastic rails used to mount control unit (Pic1)
4. Disconnect electric motor plug contact
5. Remove bolts T40 securing electric motor retaining plate (Pic2)
6. Push out electric motor upward (Pic3)
7. Remove electric motor
8. Pull shafts out of rails using pliers
Important: To ensure the parallelism of the two rails, do not twist the shafts and do not push against the rails mechanically.
9. Remove electric motor retaining plate
10. Position new electric motor retaining plate and screw in new bolts by a few threads
11. Insert shafts all the way into rails
Important: Do not turn the shafts by hand.
If the electric motor or one of the shafts has become detached as a result of the damage,
it is essential to check and, if necessary, to restore the parallelism.
To do so, compare the longitudinal position of the rear edge of the respective rail using a measuring tape (Pic11)
and adjust by turning the inserted shaft
12. Attach rubber mounts to new electric motor
13. Attach electric motor to short shaft first (Pic4)
Note: The electrical connection must always point upward.
14. Attach rubber cap to long shaft and insert long shaft at electric motor
07-10-2013 5:41 PM
© Copyright Daimler AG
DAFARLE
Page 1/11
15. Secure shaft and electric motor on retaining plate (Pic5-7)
16. Tighten bolts securing electric motor retaining plate to 25Nm
17. Assemble remaining components in reverse order
For model 204.0 and 204.9 the entire seat frame must be replaced and seat motor should be reinforced:
The customer should be made aware that adjusting the seat with items underneath it can and will damage the seat.
Replace affected seat frame (follow WIS document AR91.10-P-1450CW). To prevent this issue from occurring again,
use a cable tie to secure the fore/aft motor to mounting bracket on both the new seat frame, as well as the other seat
frame (as illustrated in the attached picture motor_reinforce.jpg).
Attachments
File
Designation
Pic1.jpg
Unclip plastic rails
Pic2.jpg
Bolts securing electric motor retaining plate
Pic3.jpg
Remove electric motor
Pic4.jpg
Attach electric motor to short shaft
Pic5.jpg
Clip in shaft
Pic6.jpg
Clip in electric motor
Pic7.jpg
Clip in shaft
Pic11.JPG
Check parallelism
Pic10.jpg
Seat cushion without removing pnuematic lines
motor_reinforce.jpg
cable tie reinforcement
Symptoms
Body / Seat / Seat noises / Whirring
Body / Seat / Seat adjustment / Stiff/sluggish
Body / Seat / Seat adjustment / Does not adjust aft
Body / Seat / Seat adjustment / Does not adjust fore
Body / Seat / Seat adjustment / Noise
Body / Seat / Seat adjustment / Function error
Parts
Part number
ES1 ES2 Designation
Quantity Note
EPC Other
make
part
A0009107802
Parts kit - fore/aft adjustment
1
Left, with memory
X
A0009107902
Parts kit - fore/aft adjustment
1
Right, with memory
X
A 004 997 98 90
cable tie
2
Model 204.0 and 204.9 repairs
only
X
A 204 910 75 36
Left seat adjuster
1
Model 204.0 and 204.9 with
code 275
X
A 204 910 76 36
Right seat adjuster
1
Model 204.0 and 204.9 with
code 242
X
Attachments
File
07-10-2013 5:41 PM
© Copyright Daimler AG
Designation
DAFARLE
Page 2/11
SDC12198.JPG
Content of parts kit
Work units
Op. no.
Operation text
Time
Damage
code
Note
91A1M 36
Left front seat electric seat fore/aft
adjustment shaft
91N1M 36
Right front seat electric seat fore/aft
adjustment shaft
WIS-References
Document number
Title
Note
ar91.10-p-3310cw
Remove/install seat cushion Model series 207/212
Remedy
AR91.10-P-1450CW
Remove/install front seat
adjustment mechanism
Remedy
Only for models 204.0 and
204.9
Allocation
Validity
Vehicle
Engine
207.302
*
*
207.303
*
*
207.322
*
*
207.323
*
*
207.347
*
*
207.348
*
*
207.355
*
*
207.356
*
*
207.357
*
*
207.359
*
*
207.372
*
*
207.373
*
*
207.388
*
*
207.402
*
*
207.403
*
*
207.422
*
*
207.423
*
*
207.447
*
*
207.448
*
*
207.455
*
*
207.456
*
*
207.457
*
*
207.459
*
*
207.472
*
*
07-10-2013 5:41 PM
© Copyright Daimler AG
DAFARLE
Page 3/11
207.473
*
*
212.002
*
*
212.003
*
*
212.005
*
*
212.020
*
*
212.021
*
*
212.023
*
*
212.024
*
*
212.025
*
*
212.041
*
*
212.047
*
*
212.048
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TSB/Document ID: LI91.10-P-054143
Replacement Service Bulletin Number:
MFR Communication Date: 2013-07-10
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SEATS
MFR Component System:
MFR Component Subsystem:
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