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2017 E300 Transmission Fluid Service - Is it really "lifetime"?

0

Kim L. · rep 0 · May 22, 4:16 AM · 1 replies · solved · Question

My 2017 Mercedes-Benz E300 (W213) just hit 60,000 miles. I've heard conflicting things about transmission fluid. The dealer says it's "lifetime" but some forums suggest changing it around this mileage.

What's the official recommendation for the 9G-TRONIC transmission? Is this something a competent DIYer can tackle or should I take it to a specialist? I want to keep this car running smoothly for a long time.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:16 AM

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ClearTheCode guidance (Mercedes-Benz · Maintenance & DIY)

Summary: For 2017 E300 Transmission Fluid Service - Is it really "lifetime"?, work through these steps on your 2016+ vehicle:

  1. Confirm the symptom — note when it happens (cold start, highway, after fuel fill, etc.).
  2. Scan codes — save all pending/stored DTCs; don't clear until you've recorded them.
  3. Check TSBs & recalls — look up your VIN for open campaigns and known fixes.
  4. Inspect the obvious — related fuses, connectors, fluid level, and recent repairs.
  5. Test the common fix — follow model-specific service procedures; one change at a time.
  6. Escalate if needed — burning smell, no brakes, overheating, or stalling in traffic → shop visit.

Owner reported: My 2017 Mercedes-Benz E300 (W213) just hit 60,000 miles. I've heard conflicting things about transmission fluid. The dealer says it's "lifetime" but some forums suggest changing it around this mileage.

What's the official recommendation for the 9G-TRONIC transmission? Is this something a competent DIYer can tackle or should I take it to a specialist? I want to keep this car running smoothly for a…

This is educational guidance, not a substitute for hands-on diagnosis.

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