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Home >> Mercedes Benz >> 2016 >> GLC300 Base >> Repair and Diagnosis >> General Information >> OEM General Information >> Overall Vehicle - 253 Chassis - 3 Of 6 >> Maintenance >> Check All Visible Parts Of Vehicle Underside For Damage And Fluid Loss - AP00.20-P-0054G

Check All Visible Parts Of Vehicle Underside For Damage And Fluid Loss - AP00.20-P-0054G

Model 253 (except 253.99) 

G12923863Courtesy of MERCEDES-BENZ USA

Shown on model 253.925 

WARNING Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects. Wear protective gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
  Risk of death  when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. AS00.00-Z-0035-01A
  General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system   AH00.00-Z-0300-01A
  Notes on battery   AH54.10-P-0001-01A
  Notes on evaluating leakages   AH00.00-N-0011-01A
REMOVING Remove     
1 Remove front center engine compartment lining (1), center engine compartment lining (2) and rear engine compartment lining (3).    
REFER TO TESTING & REPAIR     AR61.20-P-1105LW
INSPECT Check     
2 Check visible systems, powertrain components, lines, hoses on the underfloor for damage, correct routing, leaks, correct mounting and corrosion. IMPORTANT Brake system,
Spring elements,
Shock absorber,
Suspension lines and sensors,
Steering,
Front axle,
Engine and mounted major assemblies,
Cooling system,
Heater and A/C system,
Body reinforcements,
Exhaust system,
Exhaust aftertreatment,
Actuator motors of exhaust gas flaps,
Heat shields,
Rear axle,
Rear axle shafts with boots,
Rear axle differential,
Fuel system.
If problems occur,

rectify the problems.
IMPORTANT After obtaining special order.
 
3 Check visible systems, components, lines and hoses on the underfloor for damage, correct routing, leaks, correct mounting and corrosion. Equipment-dependent.
IMPORTANT Hybrid components,
Stationary heater,
Manual transmission,
Clutch operation,
Automatic transmission,
Boots of front axle shafts (4MATIC),
Front axle transmission (4MATIC),
Transfer case (4MATIC).
If problems occur,

rectify the problems.
IMPORTANT After obtaining special order.
 
4 Check underfloor and visible component parts on underfloor for damage, routing, mounting and corrosion. IMPORTANT Wheel well trim
Underfloor paneling, Underfloor.
If problems occur,

rectify the problems.
IMPORTANT After obtaining special order.
 
5 Check visible body panels for corrosion and deformation. IMPORTANT Wheel well body panels,
Front axle carrier,
Rear axle carrier,
Chassis steering arms,
Underfloor body panels,
Body reinforcements.
IMPORTANT Check rear axle carrier in area of welded-on mounting supports for thrust arm/tie rod for corrosion/perforation.
If problems occur,

proceed in accordance with the country-specific regulations for mobility and body shell complaints.
 
6 Check vehicle underside for evidence of driving over obstacles or damage caused by contact with the vehicle underside. If it is suspected that obstacles have been driven over or bottoming damage has occurred,

Check steering for mechanical damages.
If the steering is mechanically damaged,

Replace steering for safety reasons.
IMPORTANT After obtaining special order.
 
INSTALLING Install     
7 Install front center engine compartment lining (1), center engine compartment lining (2) and rear engine compartment lining (3).    
REFER TO TESTING & REPAIR     AR61.20-P-1105LW