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2019 JEEP CHEROKEE
3.2L V6•AWD•AUTOMATIC•gas
11 active safety recalls on this vehicle — view recalls
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Repairs0Labor983Torque6821Fluid17DTC2344Battery2Maintenance0Recalls11
P3603high severityPowertrain

Enhanced Starter Motor Control Module Fault

on 2019 Jeep Cherokee 3.2L V6 · AWD

What this code means

The enhanced or reinforced starter motor used in start-stop systems has a control module fault. These starters are designed for frequent cycling.

Symptoms

  • Start-stop disabled
  • Slow cranking after stop event
  • Starter noise during restart
  • Unusual vibration during start
  • Increased restart time

Common causes

  • Starter control module failure
  • Starter motor brush wear
  • Pinion gear engagement issue
  • Starter solenoid degradation
  • Excessive starter motor temperature

Diagnostic steps

  1. Read starter motor cycle count
  2. Test starter motor current draw
  3. Check starter engagement speed
  4. Monitor starter solenoid operation
  5. Measure voltage drop across starter circuit

Repair notes

Replace enhanced starter motor assembly. Standard starters are not suitable for start-stop equipped vehicles.

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