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Home >> Mercedes Benz >> 2021 >> G550 >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Seats, Bunks, Restraint Systems - 463 Chassis (2 Of 3) >> Testing & Repair >> Remove/Install Lumbar Support Air Cushion Of Front Seat Backrest - AR91.25-P-1445GW

Remove/Install Lumbar Support Air Cushion Of Front Seat Backrest - AR91.25-P-1445GW

Model 463 

as of model year 2013 up to model year 2019 

except code PA1 (Seat comfort package) 

/FACELIFT 2012 

G13670507Courtesy of MERCEDES-BENZ USA
Fig 1: Lumbar Support Air Cushion Of Front Seat Backrest Components Location - Model 463 As Of Model Year 2013 Up To Model Year 2019 Except Code PA1 /Facelift 2012
G13670508Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Remove covering on front seat backrest Remove/install front seat backrest cover
IMPORTANT Do not remove front seat.
AR91.18-P-1820GW 
2 Remove seat backrest shell from backrest frame (2)    
3 Unclip electrical wiring harnesses (3, 4) from wire frame (10)    
4 Disconnect electrical connection (5)    
5 Unclip electrical wiring harness (6) from wire frame (10)    
6 Remove cable tie (7)    
7 Remove holder (8) of driver's seat lumbar support pneumatic pump (M25/4) or front passenger seat lumbar support pneumatic pump (M25/5) from seat backrest frame (2)    
8 Unclip and disconnect electrical connector (9) from seat backrest frame (2)    
9 Unhook wire frame (10) from hooks (arrows A) on backrest frame (2) NOTES Unhook carefully.
Risk of breakage of the hooks (arrows A).
 
10 Unhook wire frame (10) from mounting holes (arrows B) in backrest frame (2)    
11 Swivel wire frame (10) upwards and unhook from mounting holes (arrows C) in backrest frame (2)    
12 Remove wire frame (10) with air cushion (1)    
13 Install in the reverse order