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Automatic Transmission Diagnosis - with Codes: Maintenance Land Rover Discovery III

Automatic Trans 2 illustrations ~187 words

TRANSMISSION FLUID COOLER

Transmission fluid from the automatic transmission is circulated through a transmission fluid cooler attached to the front of the radiator. (Scheme 17) Quick release connectors on the transmission fluid lines attach to connections on each end tank of the transmission fluid cooler. A transmission fluid temperature sensor on the right end tank provides the instrument cluster with an input of transmission fluid temperature. If the temperature exceeds a preset limit, the instrument cluster illuminates the transmission temperature warning lamp. (Scheme 18) The warning lamp remains illuminated until the temperature of the transmission fluid returns within limits.

Scheme 17

Scheme 17: TRANSMISSION FLUID COOLER

Scheme 18

Scheme 18

Transmission Fluid Leaking Out Of Dipstick Tube

Transmission fluid "Mysteriously" expelling from dipstick tube especially after a long drive or when towing could be caused by an overfilled transmission. It could also be caused by water getting into and freezing in the automatic transmission breather tube. To correct water getting into and freezing in automatic transmission breather tube the breather tube must be modified. See Land Rover TSB D352 dated January 12, 1999 TRANSMISSION BREATHER TUBE .