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2000 BMW X5 4.4I E53
4.4L V8 M62•AWD•AUTOMATIC•gas•M62B44
6 active safety recalls on this vehicle — view recalls
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Repairs0Labor489Torque2160Fluid10DTC1997Battery1Maintenance0Recalls6
P0718moderate severityPowertrain

Transmission Fluid Temperature Sensor Circuit Intermittent

on 2000 BMW X5 4.4i E53 4.4L V8 M62 · AWD

What this code means

The transmission fluid temperature sensor is giving intermittent or erratic readings. The computer relies on this value to set shift and lockup strategy.

Symptoms

  • Inconsistent shift quality
  • Delayed torque converter lockup
  • Overheat warning appears randomly

Common causes

  • Poor connector contact
  • Damaged wiring harness
  • Faulty fluid temp sensor
  • Internal TCM fault

Diagnostic steps

  1. Retrieve codes and freeze frame data
  2. Monitor temp sensor for signal dropouts
  3. Wiggle-test harness and connector
  4. Replace sensor if reading is intermittent
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Other Powertrain codes on this vehicle

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