Expert Mercedes-Benz C-Class transmission service in Chicago. Free computer diagnostic, 2-year / 24,000-mile warranty on rebuilds, all years.
We will contact you as soon as a service member is available by call, text, or email.
722.6: solenoid pack replacement or valve body rebuild. 722.9 conductor plate: replacement $600 - 950 if clutches are healthy. Full rebuild if clutch damage from extended limp-mode driving.
722.6: MB 236.12 722.9: MB 236.14 Change every 40,000 miles
Verify exact spec on the dipstick label or owner's manual before fill. Recommended change interval: every 60,000 miles for normal driving, 30,000 miles under severe service (towing, stop-and-go, hot climates). Pan service typically takes 6 - 8 quarts; a full fluid exchange takes 10 - 14 quarts depending on cooler-line capacity.
Conductor plate: 1 - 2 days. Rebuild: 3 - 4 days.
Fluid service and inspection complete the same day. Solenoid or sensor replacement: 1 day. Torque converter or seal repair: 2 - 3 days. Full rebuild with road test: 4 - 6 days. Time estimates assume parts in stock - call (312) 626-8759 to verify availability for your specific vehicle.
Every vehicle needs diagnosis before anyone can promise a repair path. These are the situations we help organize before you decide what to do next.
Tell us when it happens, whether reverse still works, and if warning lights are on. A scan and fluid check come before guessing at a rebuild.
Fluid condition, leak location, and driving distance matter. If the vehicle is slipping badly or overheating, towing may be the safer next step.
A failed solenoid, valve body, converter, or internal clutch problem can lead to very different repair paths. The goal is a clear diagnosis and written estimate.
Multiple solenoid codes at once (P0740, P0750, P0755, P0760) almost always mean conductor plate failure - not multiple solenoid failures. The conductor plate is a single repair.
If caught early (before clutch damage from running in limp mode), conductor plate alone is sufficient. We'll inspect clutch condition during diagnosis.
722.6 uses MB 236.12; 722.9 uses MB 236.14. Using the wrong fluid accelerates failure.
3 - 4 days.
If you're close, carefully yes - drive gently. If you're more than a few miles away, tow it. We offer free towing within 15 miles with repair over $500.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.
