LI91.12-P-072069

Model Series 167 - Seat Adjustment - Various Customer Complaints
Topic number
LI91.12-P-072069
Version
1
Function group
91.12 Rear seats
Date
12-18-2020
Validity
V/X 167 low lock code 567 (Rear seats, electrically adjustable)
Reason for change
Reason for block
Complaint:
1. Front seat moves forwards (fore/aft adjustment) when the seat backrest is adjusted backwards. Only occurs if the
seat backrest of the second seat row is folded over (video point 1).
2. Front seat backrest adjusts to the vertical position when the front seat is adjusted backwards (fore/aft adjustment).
Only occurs if the seat backrest of the second seat row is folded over (video point 2).
3. Front seat moves forwards (fore/aft adjustment) when the seat backrest of the second seat row is folded over or the
Easy Entry and exit feature is activated for the third seat row (videos point 3).
4. Front seat can no longer be adjusted backwards (fore/aft adjustment) when the second seat row is folded over.
Attachments
File
Description
Video point 1.MOV
Video point 1
Video point 2.MOV
Video point 2
Video point 3 Easy Entry.MOV
Video point 3 Easy Entry
Video point 3 seats folded.MOV
Video point 3 seats folded
Cause:
1. - 3.: Series production configuration in order to prevent collision with the head restraints on the second seat row.
If the problem occurs when the seat backrest is not folded over, the cause is an unlocked second seat row
(The head unit message "Rear backrest not locked" is displayed when all the doors are closed and the ignition is on).
4. If the second seat row has been folded over using the emergency release (red strap), the front seats are in the
emergency position and consequently have only a limited adjustment range.
Remedy:
1.-3.: Series production configuration (seat backrest of second seat row folded over).
1.-2.: (Seat backrest of second seat row not folded over):
12-18-2020 4:24 PM
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- Reset the emergency release: pull the red strap and release it again.
- Check microswitch mounting (see attachments). If the microswitch mounting is loose, install a new holder. The microswitch mounting is located under each seat frame base (40% / 60% side) on the left-hand side when viewed in the
direction of travel.
- If the two steps described above are processed without success, create a TIPS case, read out the seat control unit
logs, including "Add on 16503" and attach to the case.
4. Fold over the second seat row using the switch in the trunk.
Attachments
File
Description
Microswitch.jpg
Microswitch
Microswitch 60% side_View direction of travel.jpg
Microswitch 60% side_View direction of travel
Microswitch 60% side_View against direction of travel.jpg Microswitch 60% side_View against direction of travel
Symptoms
Body / Seat / Seat adjustment / Function error
Parts
Part number
ES1 ES2 Designation
A 167 921 81 00
Quantity Note
Microswitch holder
EPC
1
X
Validity
Vehicle
Engine
Transmission
GLE (167)
*
*
GLS (167)
*
*
Attachments
Microswitch.jpg:
12-18-2020 4:24 PM
© Copyright Mercedes-Benz AG
JKANTAR
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Microswitch 60% side_
View direction of travel.
jpg:
Microswitch 60% side_
View against direction of
travel.jpg:
12-18-2020 4:24 PM
© Copyright Mercedes-Benz AG
JKANTAR
Page 3/3