How to check automatic transmission oil generally
Checking the automatic transmission fluid (ATF) level in your vehicle is essential for ensuring smooth operation and preventing potential damage to the transmission. Here’s a general guide on how to check the ATF level, We will then delve into the process of checking the oil level in the automatic transmissions of various types of Mercedes transmissions.
- Park on a level surface: Make sure your car is parked on a level surface. This ensures an accurate reading of the fluid level.
- Warm up the engine: Start the engine and let it idle for a few minutes to warm up the transmission fluid. This helps to get an accurate reading.
- Locate the transmission dipstick: The transmission dipstick is usually located towards the back of the engine compartment in vehicles with front-mounted engines. It’s typically labeled and has a brightly colored handle, often red or yellow. Refer to your vehicle’s owner’s manual if you’re having trouble finding it.
- Pull out the dipstick: Once you’ve located the dipstick, pull it out of the transmission dipstick tube.
- Wipe the dipstick: Use a clean rag or paper towel to wipe off the dipstick completely.
- Reinsert the dipstick: After wiping it clean, reinsert the dipstick fully into the transmission dipstick tube.
- Check the fluid level: Pull out the dipstick again and observe the fluid level. Some dipsticks have markings indicating the appropriate fluid level. The fluid should be within the designated range. If there are no markings, check the color and consistency of the fluid. It should be transparent and reddish in color. Dark or burnt-smelling fluid may indicate a problem and should be addressed by a professional.
- Add fluid if necessary: If the fluid level is below the recommended range, you’ll need to add ATF. Use a funnel to pour ATF into the transmission dipstick tube. Add small amounts at a time and recheck the level frequently to avoid overfilling.
- Recheck the level: After adding fluid, recheck the fluid level to ensure it’s within the recommended range.
- Replace the dipstick: Once you’re satisfied with the fluid level, securely reinsert the dipstick into the transmission dipstick tube.
- Close the hood: Close the hood of your vehicle and you’re done.
Remember, it’s essential to use the type of ATF recommended by your vehicle’s manufacturer. If you’re unsure about any aspect of checking or adding transmission fluid, it’s always best to refer to your vehicle’s owner’s manual for guidance.
How do i check automatic transmission fluid ? Mercedes
Checking the automatic transmission fluid (ATF) level in Mercedes vehicles follows a similar process to that of other cars, but with some Mercedes-specific nuances.
Checking the automatic transmission fluid in Mercedes A-Class, B-Class, CLA and GLA
To check the automatic transmission oil level in compact Mercedes vehicles equipped with the 7G-DCT dual clutch gearbox, such as the Mercedes A-Class, B-Class, CLA, and GLA X156 and GLA H247, follow these steps:
- Lift the vehicle using the hydraulic lift.
- Remove the rear part of the lower soundproofing undertray.
- Remove the rear part of the lower engine compartment trim.
- Check the gearbox for leaks and exterior damage.
- Perform an oil change.
- Remove the engine air intake duct (1) before the air filter.
- Read fault memory with diagnostic system and erase if necessary.
- Apply the parking brake and start the engine.
- Perform initialization with the diagnostic system.
- Idle the engine in neutral to warm it up.
- Unlock the cap (93).
- Remove the cap (93) from the dipstick guide tube (2).
- Check for a marking (white dot) on the cap (93).
- Check the transmission oil level at idle speed and repeat the procedure 3 times.
- Suck out or top up transmission oil.
- Check the transmission oil level at idle speed and repeat the procedure 3 times.
- Reinstall the cap (93) onto the dipstick guide tube (2) and press a new safety pin (93a) until it clicks into place.
- Remove the vehicle’s diagnostic system.
- Perform an engine operation test, check the gearbox for leaks and functionality.
- Reinstall the rear part of the lower soundproofing undertray.
- Install the rear part of the lower engine compartment trim.
- Mount the engine air intake duct (1) before the air filter.
Checking the automatic transmission fluid in Mercedes Sedan and Mercedes SUV with 7G-Tronic
To check the automatic transmission oil level in compact Mercedes vehicles equipped with the 7G-TRONIC, such as the Mercedes C-Class, E-Class, S-Class and Mercedes SUV, follow these steps:
- Lift the vehicle using the hydraulic lift.
- Inspect the gearbox oil pan.
- Modified oil pan and overflow tube
- Loosen the drain plug (3).
- Mount the adapter (2) and connect the oil distributor.
- Pump 6 liters of gearbox oil into the gearbox.
- Start the engine.
- Connect the diagnostic system and determine the gearbox oil temperature.
- Bring the gearbox oil temperature to 60°C/194°F.
- Turn off the engine and allow the gearbox oil to cool.
- Turn off the engine.
- Determine the gearbox oil temperature.
- Start the engine and let it run with the gearbox in the P (Park) position.
- Allow approximately 4 liters of gearbox oil to drain, After gearbox and torque converter replacement.
- Allow approximately 2 liters of gearbox oil to drain, When the torque converter has not been emptied.
Adjust the gearbox oil level
- Engage the P R N D gears repeatedly with the brake applied and the engine idling.
- Shift the gearbox to the P (Park) position and let the engine idle.
- Remove the adapter (2) from the oil pan.
- Allow a steady flow of oil (arrow a) at the indicated gearbox oil temperature until the oil drips only (see correct oil capacity – arrow b).
- Screw in the drain plug (3).
- Turn off the engine.
Checking the automatic transmission fluid in Mercedes Sedan and Mercedes SUV with 9G-Tronic
To check the automatic transmission oil level in compact Mercedes vehicles equipped with the 9G-TRONIC, such as the Mercedes C-Class, E-Class, S-Class and Mercedes SUV sach as the Mercedes GLC, GLE and GL, follow these steps:
- Position an appropriate oil collector under the gearbox.
- Loosen the quick closure (1).
- Position the overflow tube to fill with oil (position 1).
- Install the adapter and connect the oil distributor.
- Pump gearbox oil into the gearbox.
- Start the inspection routine, check the gearbox oil level, and adjust if necessary.
- Disconnect the adapter and oil distributor and tighten the quick closure (1).
- Perform an engine operation test, check for leaks, and test the gearbox functionality.
- Install the lower engine compartment trim.
How often automatic transmission fluid change ?
Ideally, replace the automatic transmission oil every 60,000 km to maintain optimal transmission performance.
