Check vehicle underside in visible area for signs of damage, fluid loss and corrosion

AP60.00-P-0051C

Check vehicle underside in visible area for signs of damage, fluid loss and corrosion

04.03.2020

Model

253 (except 253.99)

 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

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 Danger

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

Topical note

General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment

AH00.00-Z-0300-01A

Topical note

Notes on battery

AH54.10-P-0001-01A

Notes on evaluating leakages

AH00.00-N-0011-01A

Preparatory activity

1

Lift vehicle with lifting platform.



AR00.60-P-1006A



Check

2

Check visible component parts, lines, hoses on underbody for damage, routing and fluid loss.

 If necessary, use commercially available devices/tools.
Swiveling inspection mirror with lighting, comparable to inspection mirror Hazet 1977-1

 Steering,
Spring elements,
Shock absorber,
Rear axle shaft boots,
Underfloor paneling,
Heat shields,
Exhaust system,
Exhaust aftertreatment,
Actuator motors of exhaust gas flaps,
Brake system,
Fuel system,
Rear axle differential.

If problems are determined,



rectify the problems.

 Subject to separate repair order.

3

Check visible component parts, lines, hoses on underbody for damage, routing and fluid loss.

Equipment-dependent.

 If necessary, use commercially available devices/tools.
Swiveling inspection mirror with lighting, comparable to inspection mirror Hazet 1977-1

 External noise sound generator,
Electric drive and power electronics,
High-voltage battery and electric lines,
Stationary heater,
Manual transmission,
Clutch operation,
Automatic transmission,
Front axle shafts with boots (4MATIC),
Transfer case (4MATIC).

If problems are determined,



rectify the problems.

 Subject to separate repair order.

4

Check visible body panels for corrosion and deformation.

 If necessary, use commercially available devices/tools.
Swiveling inspection mirror with lighting, comparable to inspection mirror Hazet 1977-1

 Wheel well body panels,
Front axle carrier,
Rear axle carrier,
Chassis steering arms,
Underfloor body panels,
Body reinforcements.

If problems are determined,



proceed in accordance with the country-specific regulations for mobility and body shell complaints.

5

Check vehicle underside for evidence of driving over obstacles or damage caused by contact with the vehicle underside.

 If necessary, use commercially available devices/tools.
Swiveling inspection mirror with lighting, comparable to inspection mirror Hazet 1977-1

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.

 Subject to separate repair order.

Finishing activity

6

Lower vehicle with vehicle lift.



AR00.60-P-1006A