2026-07-22 · 5 min read
Mercedes-Benz CLS — 变速箱油
CLS Transmission Fluid — 7G vs 9G
- C218: 7G-Tronic uses MB 236.7 ATF — change every 20,000 km
- C257: 9G-Tronic uses MB 236.15 ATF — change every 20,000 km
- Symptoms of degraded ATF: hesitation on upshift, hard Park engagement, creep judder
Mercedes ATF — Malaysia Workshop Guide
9G-Tronic (W205/W206/GLC/GLE) requires MB 236.15 fluid — no substitutes. The older 7G-Tronic (W204) uses MB 236.11 or 236.12. Using generic ATF causes harsh shifting, hunting between gears, and premature clutch wear. The 9G-Tronic is not listed as a 'lifetime fill' by some dealers — change every 20,000 km. A W205 9G-Tronic ATF change ( at an independent workshop) resolves most jerky shift complaints. Budget for the service at an authorised dealer.