Transmission History by Year - Infiniti Q50
2014 - 2017: 7-speed RE7R01A automatic (2.0T 4-cyl or 3.7L V6) 2018+: 7-speed RE7R01A (3.0T V6 twin-turbo)
Expert Infiniti Q50 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.
2014 - 2017: 7-speed RE7R01A automatic (2.0T 4-cyl or 3.7L V6) 2018+: 7-speed RE7R01A (3.0T V6 twin-turbo)
RE7R01A solenoid pack: replacement resolves most cases ($700 - 1,000). Full rebuild if clutch packs are damaged or valve body bore wear is extensive. 3.0T: more aggressive fluid service intervals.
Nissan Matic-W or Matic-S (confirm for year)
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.
Solenoid: 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.
RE7R01A solenoid pack failure - the most common Q50 transmission issue. Pull codes; P0750 - P0770 confirm it. $700 - 1,000 for solenoid replacement.
Likely TCC shudder from the high-torque twin-turbo application. Fluid exchange first, then converter assessment.
Every 30,000 miles, every 20,000 if you drive the 3.0T hard.
3 - 4 days.
The RE7R01A in the Q50 is an evolution of the RE7R01A in the G37. Same family, similar failure modes.
Same-day appointments available. Honest estimates, no surprises. We've been doing this since 1987.
