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2021 TESLA MODEL S
Plaid Tri Motor AWD•AWD•AUTOMATIC•ev
24 active safety recalls on this vehicle — view recalls
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Repairs0Labor322Torque4801Fluid5DTC726Battery1Maintenance0Recalls24
P3047critical severityPowertrain

DCT Odd Gear Synchronizer Ring Worn

on 2021 Tesla Model S Plaid Tri Motor AWD · AWD

What this code means

The synchronizer ring for the odd gear set (1st, 3rd, 5th) in the DCT is worn beyond tolerance, causing grinding or difficulty engaging gears.

Symptoms

  • Grinding noise on 1-3-5 gear engagement
  • Delayed odd gear shifts
  • Harsh engagement in 1st gear from stop
  • Metallic particles in fluid
  • Gear rejection on fast shifts

Common causes

  • Synchronizer ring wear from aggressive shifting
  • Insufficient lubrication
  • Manufacturing defect
  • High-mileage wear
  • Clutch engagement timing error causing ring stress

Diagnostic steps

  1. Listen for grinding during odd gear engagement
  2. Check DCT fluid for metallic particles
  3. Monitor gear engagement time for odd gears
  4. Compare odd vs even gear shift quality
  5. Review TCM shift strategy data

Repair notes

Transmission disassembly required to replace synchronizer rings. Address clutch engagement timing if contributing to accelerated wear.

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