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Home >> Mercedes Benz >> 2018 >> SLC43 AMG >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments - 172 Chassis - 2 Of 4 >> Maintenance >> Check Lamps In Instrument Cluster And Interior Illumination - AP54.30-P-5453SLB

Check Lamps In Instrument Cluster And Interior Illumination - AP54.30-P-5453SLB

Model 172 

Shown on instrument cluster in model 172 up to model year 2017 

G13847715Courtesy of MERCEDES-BENZ USA

Shown on instrument cluster in model 172 as from model year 2017 

G13847716Courtesy of MERCEDES-BENZ USA
  Preparatory activity    
1 Switch electronic ignition lock control unit to position "2" (circuit 15)    
INSPECT Check    
2 Check preglow indicator lamp (1) If installed.
IMPORTANT The preglow indicator lamp (1) must light up and then go out. If complaint present
↓
Rectify problem subject to separate repair order.
 
3 Check coolant temperature gauge (5) and coolant temperature warning lamp (4) IMPORTANT The display of the coolant temperature gauge (5) must indicate the current coolant temperature and the coolant temperature warning lamp (4) must light up. If complaint present
↓
Rectify problem subject to separate repair order.
 
4 Check fuel level indicator (8) and fuel reserve warning lamp (7) IMPORTANT The fuel level indicator (8) must show the corresponding fuel level in the fuel tank, and the fuel reserve warning lamp (7) must light up.
If complaint present
↓
Rectify problem subject to separate repair order.
 
5 Check multifunction display (6) for visible pixel faults, vertical stripes, failed segments or black points If complaint present
↓
Rectify problem subject to separate repair order.
 
6 Manually switch on the exterior lights    
7 Check instrument illumination IMPORTANT The tachometer (2) and speedometer (9) must be lit.
If complaint present
↓
Rectify problem subject to separate repair order.
 
8 Actuate instrument illumination brightness control IMPORTANT The instrument illumination must be brighter or darker to match.
If complaint present
↓
Rectify problem subject to separate repair order.
 
9 Manually switch off exterior lights    
10 Switch on lamps in passenger compartment and check for proper operation If complaint present
↓
Rectify problem subject to separate repair order.
 
11 Switch off lamps in passenger compartment    
  Finishing activity     
12 Switch electronic ignition lock control unit to position "0"