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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1750 (Automatic Transaxle Cooling - AISIN Aw21/6F35 (Except Hybrid)) >> Diagnosis And Testing >> Transaxle Cooling - Aisin AW21 >> Symptom Table - NVH >> Transmission Fluid Condition Check

Transmission Fluid Condition Check

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check the transmission fluid level.
  2. Observe the color and the odor. The color under normal circumstances should be a dark red color, not brown or black or have a burnt odor.
  3. Hold the transmission fluid level indicator over a white facial tissue and allow the transmission fluid to drip onto the facial tissue and examine the stain.
  4. If evidence of solid material is found, the transmission fluid pan should be removed for further inspection.
  5. If the stain is a foamy pink color, this may indicate coolant in the transaxle. The engine cooling system should also be inspected at this time.
  6. If transmission fluid contamination or transaxle failure is confirmed by the sediment in the bottom of the fluid pan, install a new transaxle. If installing a new transaxle, the transmission fluid cooler and transmission fluid cooler tubes should be cleaned.
  7. If the transaxle is to be overhauled or if installing a new transaxle, the fluid cooler must be backflushed. Refer to TRANSMISSION FLUID COOLER -- BACKFLUSHING AND CLEANING .
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