2011 Acura RL Problems: 1 Issues Every Owner Should Know
2011 model year · 780+ owner reports · Updated April 2026
According to Au7o's analysis of 780+ owner reports, the 2011 Acura RL has 1 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is SH-AWD System Grinding and Transfer Case Noise with 780 owner reports. Across all issues, repair costs range from $300 to $3,000. DIY maintenance guides at au7o.io.
All 1 Known Issues
On the 2005-2012 Acura RL, the RL SH-AWD system develops grinding and whining noises from the rear differential and transfer case as the electromagnetic clutch packs wear. The system uses electrically-controlled clutch packs to distribute torque to each rear wheel independently, and these clutch packs wear over time, leading to noise and eventually reduced AWD functionality.
Common Symptoms
- Grinding noise from rear during turns
- Whining that increases with speed
- AWD system warning light illumination
- Clunking from rear during parking maneuvers
- Reduced traction in slippery conditions
How to Fix
Drain and refill the rear differential with Honda Dual Pump II fluid — do NOT use conventional gear oil. If noise persists after fluid change, the rear differential unit needs rebuilding with new clutch packs. Replace the electromagnetic actuators if they are not engaging properly. Regular fluid changes every 30,000 miles prevent premature clutch pack wear.
What Owners Are Using
Parts and tips from 780+ owners who fixed this issue
- TipChange the rear diff fluid to Honda Dual Pump II every 30,000 miles — this is the single most neglected maintenance item on the RL and the most common cause of SH-AWD noise. Most independent shops use the wrong fluid which accelerates clutch pack wear.