Chassis, generic

C05E5 4WD/AWD Clutch A Position Not Learned

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

The controller has no valid stored reference for clutch A, typically the touch or kiss point where the plates begin to carry torque. Bosch finds this point on a transfer-case clutch by running the motor at constant speed and intersecting two regression lines from the free-travel and loaded ranges; the run is repeated at engine start or at standstill because wear shifts the curve. Dana notes that each motor and control unit pairing gives its own kiss point. Magna moves the plates to a stand-by position just before contact. A new actuator, controller or clutch, an interrupted learn or lost memory leaves the value missing; a learn routine with a scan tool usually clears it. No manufacturer publishes C05E5.

Likely causes

Learn not run after replacing actuator, clutch or module
Learn routine aborted, for example by low voltage or vehicle movement
Stored values lost after battery disconnection or module fault

Symptoms

  • AWD warning directly after a repair
  • All-wheel drive disabled or harsh engagement

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–250
Time0.3–1 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

awd clutch aawd control module

Related codes

C05E6C05E0C05E1C05FF

References: patents.google.com, patents.google.com, patents.google.com.