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2008 MERCEDES-BENZ GL450 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT MERCEDES-BENZ REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Wiring Diagrams
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- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
CV AXLE SHAFT, Replace -> Front -> Rear
Vehicle: 2008 MERCEDES-BENZ GL450 4.6 V8 GAS
Front
- Raise and support vehicle.
- Deactivate SBC brake system using STAR DIAGNOSIS.
- Empty rear air springs using STAR DIAGNOSIS.
- Remove front wheels.
- Remove collar nut from front axle shaft.
- Remove lower engine cover shields.
- Disconnect electrical lines from brackets at front wheel and on strut assembly.
- Remove brake hose from brake hose bracket, cut cable ties if required.
- Remove tie rod from steering knuckle.
- Remove nut from upper transverse rod and remove transverse rod from steering knuckle.
- Remove front axle shaft from front axle flange, using suitable removal tool.
- Swivel steeri...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
Component Replacement -> Control Module -> Sensor
Vehicle: 2008 MERCEDES-BENZ GL450 4.6 V8 GAS
Control Module
- Read out variant coding of TPMS (RDK) control module (N88). To do this connect STAR DIAGNOSIS and transfer data of TPMS (RDK) control module (N88) to STAR DIAGNOSIS.
- Move passenger seat into rearmost position.
- Remove floor mat and lift back floor covering in passenger foot well, Fig. .
- Remove impact absorber.
- Unscrew plastic nuts and remove step plate.
- Unlock electrical connector and unplug connector from TPMS (RDK) control module (N88).
- Unscrew bolt (6) and pull TPMS (RDK) control module (N88) out of retaining clamp.
- Reverse procedure to install, activate TPMS sele...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
Starter, Replace
Vehicle: 2008 MERCEDES-BENZ GL450 4.6 V8 GAS
- Disconnect battery ground cable.
- Raise and support vehicle.
- Remove fasteners and sound insulator panels.
- Remove nut and starter shield.
- Remove electrical harness from transmission bracket.
- Remove starter bolts and move starter our of bellhousing.
- Remove protective cap and disconnect connector for circu...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
Cabin Air Filter Service -> Mercedes-Benz -> 2006-09 ML, R & 2007-09 GL Class
Vehicle: 2008 MERCEDES-BENZ GL450 4.6 V8 GAS
On 2006-08 models except AMG, under normal operating conditions the cabin air filter should be replaced every 24 months or 26,000 miles. In dusty areas change the cabin air filter more often.
On 2009 models except AMG, under normal operating conditions the cabin air filter should be replaced every 24 months or 20,000 miles. In dusty areas change the cabin air filter more often.
On 2006-09 AMG models, under normal operating conditions the cabin air filter should be replaced every 24 months or 30,000 miles. In dusty areas change the cabin air filter more often.
- Open ...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
Mercedes-Benz -> Brake Assist System (BAS)/Acceleration Slip Regulation (ASR) Or Brake Assist System (BAS)/Electronic Stability Program (ESP) Warning Lamp ->
Vehicle: 2008 MERCEDES-BENZ GL450 4.6 V8 GAS
The Brake Assist System (BAS)/Acceleration Slip Regulation (ASR) or Brake Assist System (BAS)/Electronic Stability Program (ESP) warning lamp, will illuminate when the ignition switch is placed in the On position to indicate the warning lamp is operational. The lamp should go off when the engine is started. If the warning lamp remains on after the engine has been started or has come on while driving the vehicle, a fault in the BAS, ASR or ESP h...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
Radiator, Replace
Vehicle: 2008 MERCEDES-BENZ GL450 4.6 V8 GAS
Risk of explosion from explosive gas. Risk of poisoning and caustic burns from swallowing battery electrolyte. Risk of injury through burns to skin and eyes from battery acid or when handling damaged lead-acid batteries. No fire, sparks, naked flames or smoking. Wear protective gloves, acid-resistant clothing and safety glasses. Pour battery electrolyte only into suitable and appropriately marked containers. Lethal injuries are possible if vehicle slips off of lifting platform Align vehicle between columns of hydraulic hoist and position four support plates below hoist support...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2008 MERCEDES-BENZ GL450 4.6 V8 GAS
- Open engine hood.
- Remove front engine cover.
- Rotate or lift belt tensioner arm counterclockwise, using a suitable tool to relie...
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COMPONENT LOCATION DIAGRAMS FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
Component location diagrams for most 2008 MERCEDES-BENZ GL450 cars and light trucks sold in the U.S. from 1990+.
Luggage Compartment Diagram for 2008 MERCEDES-BENZ GL450 4.6 V8 GAS Components on diagram: |
Roof Components Diagram for 2008 MERCEDES-BENZ GL450 4.6 V8 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
OEM drawn wiring diagrams for most 2008 MERCEDES-BENZ GL450 cars and light trucks sold in the U.S.
2008 MERCEDES-BENZ GL450 4.6 V8 GAS Wiring Diagram Components on diagram: |
2008 MERCEDES-BENZ GL450 4.6 V8 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
OEM TSB listings for most 2008 MERCEDES-BENZ GL450 cars and light trucks sold in the U.S. from 1985+.
Document: Re-code the Software Calibration Number (SCN) Vehicle: 2008 MERCEDES-BENZ GL450 4.6 V8 GAS Auto Systems: |
Document: Update Rear SAM Software Vehicle: 2008 MERCEDES-BENZ GL450 4.6 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2008 MERCEDES-BENZ GL450 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2008 MERCEDES-BENZ GL450 cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2008 MERCEDES-BENZ GL450 cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2008 MERCEDES-BENZ GL450 cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2008 MERCEDES-BENZ GL450 cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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