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Home >> Mercedes Benz >> 2003 >> G55 >> Repair and Diagnosis >> Restraints >> Seat Belts >> Seats & Restraints -- Testing & Repair -- G-Class (463) >> Testing & Repair >> Remove/install heated seats control unit - AR91.30-P-0030GR

Remove/install heated seats control unit - AR91.30-P-0030GR

MODEL 463.202/222/236/237/243/244/245/246/247/248/249/250/254/270/271/303/306/309/322/323/332/333/336/340/341/346 with CODE (H11) Seat heater for rear bench seat 

Illustrated on model 463.250 

Fig 1: Identifying Heated Seats Control Unit Components (1 Of 2)
G07742456Courtesy of MERCEDES-BENZ USA

Illustrated on model 463.248 

Fig 2: Identifying Heated Seats Control Unit Components (2 Of 2)
G07742457Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Activate service mode in Telematic Alarm Identification on Demand (emergency call system) (TELE AID) IMPORTANT Only on model 463.243/244/245/250/309/322/323/332/333 with code (ET2) Tele-Aid car telephone emergency call system, 463.247/248/254/270 up to 1.4.07 with code (ET2) Tele-Aid - car telephone emergency call system - AR82.95-P-0005-03GR
IMPORTANT Notes regarding the Tele-Aid emergency call system Model 463.243/244/245/250/309/322/323/332/333, Model 463.247/248/254/270 up to 1.4.07 AH82.95-P-0001-01GA
DANGER Risk of explosion  caused by oxyhydrogen gas. Risk of poisoning and caustic burns  caused by swallowing battery acid. Risk of injury  caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking.
Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.		 AS54.10-Z-0001-01A
2 Disconnect battery ground line IMPORTANTInstallation:  Code radio, set clock, normalize power windows and, set clock on stationary heater if installed.  
    All models except model 463.236/248 with code (979) Special protection version AR54.10-P-0003G
    Model 463.236/248 with code (979) Special protection version, with code (ZS6) Special protection version FB6, with code (E26)
Additional battery 100 Ah incl. cutoff relay
Model 463.236/248 with code (979) Special protection version, with code (ZS7) Special protection version FB7, with code (E26)
Additional battery 100 Ah incl. cutoff relay		 AR54.10-P-0003PM
NOTES Notes on battery All models AH54.10-P-0001-01A
3 Remove luggage compartment cover with draft stop (A) IMPORTANT Only on model 463.202/250/254/303/306/309  
4 Remove mounting bracket for draft stop (B) from left side wall lining IMPORTANT Only on model 463.202/250/254/303/306/309  
5 Remove left stowage box IMPORTANT Only on model 463.222/244/247/322/332/336/340 with code (V53) Stowage box and luggage compartment cover AR68.72-P-0010GK
    IMPORTANT Only on model 463.248 with:
Code (979) Special protection version
code (ZS6) Special protection version FB6
code (ZS7) Special protection version FB7
Code (E26) Additional battery 100 Ah incl. cutoff relay		 AR68.72-P-0010PM
6 Remove TV tuner    
    IMPORTANT Only in model 463.202/222/243/244/245/247/250/254/270/271/303/309/322/323/332/333/340/341/with code (EM9) TV tuner Model 463.236/248 with code (EM9) TV tuner except CODE (979) Special protection version Model 463.336/346 with code (EM8) TV tuner AR82.85-P-7366GR
    IMPORTANT Only on model 463.248 with:
Code (979) Special protection version
code (ZS6) Special protection version FB6
code (ZS7) Special protection version FB7
CODE (EM9) TV tuner		 AR82.85-P-7366PM
7 Remove CD changer    
    IMPORTANT Model 463.243/244/245/246/247/249/250/254/270/271/303/309/322/323/332/333/340/341 with code (EP5) CD changer
MODEL 463.248 with CODE (EP5) CD-changer
except CODE (979) Special protection version		 AR82.64-P-7508GR
    IMPORTANT Model 463.248 with:
Code (979) Special protection version
code (ZS6) Special protection version FB6
code (ZS7) Special protection version FB7
CODE (EP5) CD changer		 AR82.64-P-7508PM
8 Unscrew nuts (1) from rear HS [SIH] control unit (N25/6)    
9 Disconnect electrical connector (3)    
10 Remove rear HS [SIH] control unit (N25/6)    
11 Install in the reverse order    
12 Deactivate service mode in Telematic Alarm Identification on Demand IMPORTANT Only on model 463.243/244/245/250/309/322/323/332/333 with code (ET2) Tele-Aid -car telephone emergency call system, 463.247/248/254/270 up to 1.4.07
with code (ET2) Tele-Aid - car telephone emergency call system		 AR82.95-P-0005-03GR
IMPORTANT Notes regarding the Tele-Aid emergency call system Model 463.243/244/245/250/309/322/323/332/333,
Model 463.247/248/254/270 up to 1.4.07		 AH82.95-P-0001-01GA
13 Read out fault memory and erase IMPORTANTIMPORTANT After work is complete, faults stored in the fault memory must be processed and erased. The stored faults may be caused by removed cables during installation or test operations as well as by simulation.  
  Connect STAR DIAGNOSIS and read out fault memory   AD00.00-P-2000-04A
14 Perform basic programming   AR00.19-P-0200P
INSPECT Checking     
15 Perform function check of seat heaters    
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