A/T Fluid Check
- Drive the vehicle until the A/T fluid temperature rises to the normal temperature [70 - 80°C (158 - 176°F)].NOTE: The A/T fluid temperature is measured with scan tool MB991502 (MUT-II).
- Park the vehicle on a level surface.
- Move the selector lever through all positions to fill the torque converter and the hydraulic circuits with fluid, and then move the selector lever to the "N" position.
- After wiping off any dirt from around the dipstick, remove the dipstick and check the condition of the A/T fluid.NOTE: If the A/T fluid smells as if it is burnt, it means that the A/T fluid has been contaminated by fine particles from the bushings and friction materials. A transaxle overhaul and cooler line flushing may be necessary.
- Check that the A/T fluid level is at the "HOT" mark on the dipstick. If the A/T fluid level is less than this, add DIAMOND ATF SP III or equivalent A/T fluid until the level reaches the "HOT" mark.
NOTE: If the A/T fluid level is too low, the oil pump will draw in air along with the A/T fluid, which will cause bubbles to form. If the A/T fluid level is too high, rotating components inside the transaxle will churn the fluid and air into a foamy liquid. Both conditions (level too low or too high) will cause the hydraulic pressure to drop, which will result in late shifting and slipping of the clutches and brakes.NOTE: In either case, air bubbles can interfere with normal valve, clutch, and brake operation. Also, foaming can cause A/T fluid to escape from the transaxle vents where it may be mistaken for a leak.
- Securely insert the dipstick.NOTE: The A/T fluid should always be replaced in the following conditions:
- When overhauling the transaxle.
- When the A/T fluid is noticeably dirty or burnt (driving under severe conditions.)