Transmission Fluid location

  • 1999 MERCEDES BENZ E320
  • 6 CYL
  • 2WD
  • 123,000 MILES
Where in the world is my transmission fluid, reservoir, anything transmission fluid related? Help! I drive a 1999 E320 Mercedes Benz. Any advice or information that may help me figure this one out would be greatly appreciated. Thanks.
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Saturday, March 12th, 2011 AT 10:54 PM

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Note: In order to perform this procedure the use of special tools is required

Inspect oil level in automatic transmission, add oil if necessary
Adding transmission oil


Risk of accident. Accidents may result if the vehicle starts off unintentionally with the engine running. Risk of injury as working around the engine during start-up or while running may result in confusions and burns
Secure vehicle to prevent it from moving.
Wear closed and snug-fitting work clothes.
Do not grasp hot or rotating parts.
NOTE: The vehicle must be horizontal

1 Remove locking pin (93a)

NOTE: To do this, shear off the plate of the locking pin with a suitable tool and press down the rest of the pin in the cap.

2 Take off cap (93)
3 Fill with transmission oil

CAUTION: When refilling and after changing the oil, pour in approx. 5 L of transmission oil before starting the engine. Insufficient and excessive quantities of oil result in malfunctions and transmission damage.

4 Start engine and allow to idle in selector lever position" P"

NOTE: When refilling, refill with the rest of the specified oil quantity.

5 Shift through the driving stages several times with the vehicle stationary and the engine idling

NOTE: Operate service brakes at the same time

6 Check transmission oil temperature


Operate service brakes at the same time. When the transmission is cold, the oil level indicator must be between the "min." And "max." Marks, 25 degree C (transmission oil temperature). The exact oil level at 80 degree C (transmission oil temperature) must be between the "min." And "max." Markings.
When using the HHT or STAR DIAGNOSIS, the current transmission oil temperature must be read out in one of the selector lever positions R, D, 4, 3, 2 or 1.
Special Tools

Special Tools

7 Insert oil dipstick as far as the stop and pull out again, read off oil level and repeat if necessary

NOTE: Warm up the transmission, wait at least 2 minutes and check the oil level with the engine running.

CAUTION: If too much transmission oil is added, it is absolutely essential to drain off or extract the surplus. Insufficient and excessive quantities of oil result in malfunctions and transmission damage.

8 Check oil level again

Correct if necessary
9 Fit cap (93) on oil filler pipe and press in new locking pin (93a) until it clicks into place
10 Check transmission for leaks

CAUTION: In the event of oil loss determine and eliminate cause, otherwise it may result in both malfunctions, transmission damage and serious harm to the environment.
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Saturday, March 12th, 2011 AT 11:09 PM

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