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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
P2609low severityPowertrain

Intake Air Heater System Performance

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

What this code means

The intake air heater circuit is not performing as expected. This heater warms incoming air to help cold starts, mainly on diesels.

Symptoms

  • Hard cold starts
  • Warning light on
  • Rough running when cold

Common causes

  • Faulty intake air heater
  • Wiring or relay fault
  • Blown fuse
  • Failed control module

Diagnostic steps

  1. Verify code with scan tool
  2. Check heater power and ground
  3. Test heater element resistance
  4. Inspect relay and fuse
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