Reserve Tank Fluid (For Active Center Differential) (Check Fluid Level)

- If the vehicle has been run, leave it for 90 min. or more in an ordinary temperature [10°C - 30°C (50°F - 86°F)] to allow the accumulator internal pressure to drop.

NOTE: If the ambient temperature is 10°C (50°F) or less, allow more time to leave the vehicle to stand idle.

2.

CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB9919/58.

- Connect scan tool MB991958 to the data link connector.
- Turn "ON" the ignition switch, perform scan tool MB991958 actuator test (Item No. 03), forcibly drive the hydraulic unit and remove the pressure in the accumulator.

NOTE:
- In the actuator test (Item No. 03: Oil Level Check Mode), the proportioning valve of the hydraulic unit is moved to the left and right for 20 times, and then the differential is cleared automatically. Drive can also be cleared forcibly using the clear key of the scan tool MB991958.
- If the function has been stopped by fail-safe, the hydraulic unit cannot be cleared forcibly.

3. Check that the fluid level in the oil reservoir is in the range between MAX and MIN.
4. If the fluid level is lower than MIN, add the specified fluid.
Specified fluid: DIAMOND ATF SP III
5. Reinstall the maintenance lid.