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W116 (1972-1980, petrol) W126 (1979-1991, petrol) W140 (1991-1998) W220 (1998-2005)
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  • Checking the Automatic Transmission Oil Level

Checking the Automatic Transmission Oil Level (Mercedes-Benz S-Class W220)

0
Automatic transmission fluid dipstick markings

A - At oil temperature 25°C

A - At oil temperature 25°C
B - At a temperature of 80°C


Checking the fluid level



1. The fluid level in the automatic transmission is measured with the engine and gearbox warmed up. To warm up the power unit to the required temperature, you can make a short (15 kilometers) trip.

2. Place the car on a horizontal surface, securely tighten the handbrake. To securely fix the car, place supports under the wheels.

3. Start the engine and let it idle. Press the brake pedal and carefully move the selector from position P to position 1, then back to P.

4. The fluid level dipstick is located at the rear of the gearbox. Before removing the dipstick, thoroughly wipe the area around it. Dirt must not get inside the gearbox.

4. The fluid level dipstick is located at the rear of the gearbox. Before removing the dipstick,…


5. Remove the dipstick and wipe off any traces of fluid with a rag. Put the dipstick back in place and remove it again. The fluid level should be between the marks on the dipstick. To add or suck out AT oil, remove red retainer 93a and remove cover 93.



Note: If you measure the level when the engine is cold, the result will be lower than the real one. Be sure to check the level when the engine is warm, since exceeding the maximum permissible fluid level can lead to failure of the gearbox.


6. Fill the fluid through the dipstick well. Do not allow dirt to get inside the box. Add only fresh fluid and only through the funnel (preferably with a filter).

7. Add liquid in small portions, constantly checking the level.

8. After you have restored the fluid level in the box, return the dipstick to its place and turn off the engine.

9. If you have to frequently top up the fluid in the box, it means there is a leak somewhere. Fix it immediately.
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S-Class W220 / Maintenance
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Checking the condition of the exhaust system
Checking the cooling system operation and frost resistance. Liquid replacement
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Checking the condition and replacing engine compartment hoses, localizing leaks
Checking the fuel system
Visual inspection of automatic transmission for leaks
Checking the condition of suspension and steering components
Checking the condition of the protective covers of the drive shafts
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Checking the air conditioning system
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W220 (1998-2005) 
  • General information
  • Introduction to guide
  • User manual
  • Maintenance
  • Power unit
  • Engine repair
  • Cooling and heating systems
  • Power and exhaust systems
  • Ignition and control system
  • Charge and launch systems
  • Transmission
  • Automatic gearbox
  • Drive shafts
  • Chassis
  • Brake system
  • Front suspension
  • Rear suspension
  • Steering
  • Body
  • Body elements
  • Electrical equipment
  • Equipment and devices
  • Electrical circuits
W140 (1991-1998) 
  • User manual
  • Controls and instruments
  • Driving and operation
  • Maintenance
  • Power unit
  • Petrol engine V6
  • Petrol engine V8
  • Petrol engine V12
  • Diesel engine OM603
  • Diesel engine OM606
  • Cooling system
  • Power supply and injection system
  • Control system HFM-SFI
  • Control system LH-SFI
  • Control systems ME-SFI
  • Diesel control system
  • Ignition system
  • Charge and launch system
  • Transmission
  • Mechanical gearbox 717.438
  • Mechanical gearbox 717.454
  • Automatic gearbox 722.5
  • Automatic gearbox 722.6
  • Clutch and drive shafts
  • Differential
  • Chassis
  • Brake system
  • Steering
  • Front suspension
  • Rear suspension
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Electrical equipment
  • Equipment and devices
  • Electrical circuits
W126 (1979-1991, petrol) 
  • Power unit
  • Engine repair
  • Ignition system
  • Lubrication system
  • Cooling system
  • Fuel system
  • Fuel injection system
  • Transmission
  • Clutch and cardan
  • Mechanical gearbox
  • Automatic gearbox
  • Chassis
  • Front suspension
  • Rear suspension
  • Steering
  • Brake system
  • Electrical equipment
  • Power devices
  • Electrical circuits
W116 (1972-1980, petrol) 
  • General information
  • Introduction to guide
  • Power unit
  • 8-cylinder V8 engine
  • 6-cylinder I6 engine
  • Cooling and lubrication system
  • Power system (carburetor)
  • Fuel injection system
  • Ignition system
  • Transmission
  • Clutch and cardan
  • Car gearbox
  • Chassis
  • Front suspension
  • Rear suspension
  • Steering
  • Brake system
  • Electrical equipment
  • Power devices
  • Electrical circuits
 
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