Expert Mercedes-Benz ML-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.
ML-Class is Mercedes' most popular SUV platform historically. Conductor plate failures on W164/W166 are extremely common - we do several of these per week. W163 ML with the older 722.6 NAG1 needs solenoid pack service. 4MATIC transfer case chain wear should be checked during any transmission service.
722.9 (W164/W166): MB 236.14 or 236.15. 722.6 NAG1 (W163): MB 236.14. Transfer case: MB 235.0. Change every 40,000 miles.
Conductor plate: 1 - 2 days. NAG1 solenoid: 1 - 2 days. Full rebuild: 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.
On a W164 or W166 ML with 722.9, limp mode = conductor plate failure. Very common repair. $900 - 1,500 at our shop vs. $2,000 - 3,500 at a dealer.
W163 ML with NAG1 722.6 - solenoid pack failure. Often repairable for $700 - 1,100 without a full rebuild.
Could be 4MATIC transfer case chain wear - very common on high-mileage ML. We'll diagnose at the free diagnostic.
If the body and engine are in good shape, yes. W163 ML frames are solid and the M112 V6 and M113 V8 are durable engines.
We source OEM-equivalent conductor plates. For adaptation coding after installation, we use MB-compatible diagnostic software.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.
