Check Oil Level In Automatic Transmission With Ultrasound Device, Correct If Necessary - AR27.00-P-0270-02EWH

Transmission 725.007/017/037/047 

Transmission 725.121/151/181 

with code ME10 (Hybrid vehicle (plug-in, PHEV)) 

	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
	Risk of injury  to skin and eyes due to handling of transmission oil. Health risk caused by swallowing transmission oil	Wear protective gloves, protective clothing and safety glasses. Do not pour transmission oil into beverage bottles.	AS00.40-Z-0001-01A
	000 588 09 19 00 Oil level sensor		WS27.00-P-0188B
	Connect STAR DIAGNOSIS and read out fault memory	Transmission 725.007/017/047 in model 213 Transmission 725.017 in model 222 Transmission 725.017/047 in model 205 Transmission 725.047 in model 253	AD00.00-P-2000-04B
	Connect/disconnect diagnostic unit	Transmission 725.037 in model 167 Transmission 725.151 in model 167 with code ME10 (Hybrid vehicle (plug-in, PHEV))	AD00.00-P-2000-06ME
	Connect/disconnect diagnostic unit	Transmission 725.121/181 in model 206, 223, 254 with code ME10 (Hybrid vehicle (plug-in, PHEV))	AD00.00-P-2000-06FR
	000 588 06 82 00 Oil dispenser		WS18.00-P-0026B
	Automatic transmission fluids (ATF) (specification 236.17)		BB00.40-P-0236-17A

Fig 1: Identifying Socket Wrench (724 589 01 09 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Adapter (725 589 03 90 00)

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

1. Coat measuring head (2) of oil level sensor with Apply couplant and calibrate.

   Test block is included in the scope of supply of the oil level sensor.

2. Coat sensor surface of sensor (2) with Apply couplant.
3. Clean measuring head mount on oil pan (34).
4. Attach measuring head (2) of oil level sensor to oil pan (34).
5. Position oil receptacle under oil pan (34).

   Commercially available devices/tools 

   Oil receptacle

6. Remove quick-release fastener (30) using socket wrench.
7. Connect diagnostic unit.
8. Start test routine.

   The test is called up in the vehicle diagnosis system as follows:

   → Control units view

   → Transmission control (VGS)

   → Actuations

   → Oil level check

   → Method:

   → Select oil level check with ultrasound measuring instrument.

   → Perform appropriate test routine.

   Follow work sequence in XENTRY.

   Courtesy of MERCEDES-BENZ USA

9. When oil level specified value is reached in guided test routine, compare this with actual value on oil level sensor.

   With thermostat-controlled oil cooler:

   After replacing oil cooler or oil lines, heat transmission oil up to 90°C until thermostat on oil cooler opens. Then check oil level and correct if necessary!

   If oil level is OK,

   ↓

   continue with operation step 12.

   If the oil level is too low,

   ↓

   continue with operation step 10.1.

   If oil level is too high,

   ↓

   continue with operation step 10.2.

10. 1. If transmission oil level is too low.

       Attach oil dispenser with adapter to oil pan (34) and add transmission oil.

       The oil dispenser filling pressure must not exceed 2 bar.

       Otherwise damage and leaks can occur at the transmission.

    2. If transmission oil level is too high.

       Drain transmission oil until specified value is displayed on oil level sensor.

11. Remove oil dispenser with adapter from oil pan (34).

    If transmission oil level is too low.

    Remove oil dispenser with adapter with engine running.

12. Screw quick-release fastener (30) into oil pan (34).

    Replace quick-release fastener (30).

    If oil pan (34) is replaced, install included quick-release coupling (30).

13. Remove sensor head (2) of oil level sensor from oil pan (34).
14. Clean area surrounding quick-release fastener (30) and ultrasonic sensor mount using assembly cleaner.
15. Switch off engine.
16. Disconnect diagnostic device from vehicle.