Across its two major generations, Acura’s RL has earned a reputation for solid reliability, but aging components can surface a set of recurring problems. This article outlines the most frequently reported issues by generation, followed by maintenance guidance to help owners prevent trouble and make informed buying decisions.
First-generation Acura RL (1995–1999)
Overview of typical reliability challenges
As the earliest RL models age, certain drivetrain and sealing components tend to show wear. Here are the issues most commonly cited by owners and service professionals for this generation.
- Automatic transmission problems: Rough or delayed shifts, slipping, or eventual transmission failure, especially at higher mileage or with degraded fluid.
- Oil and coolant leaks: Worn valve cover gaskets and rear main seal leaks are frequently reported, along with potential water-pump or radiator hose leaks as hoses age.
- Suspension and steering wear: Worn ball joints, control arm bushings, and aging struts can cause clunks, poor alignment, and a bumpy ride.
- Electrical faults and instrumentation quirks: SRS/airbag indicators, intermittent gauge or cluster glitches, and sensor faults are occasionally cited as vehicles rack up miles.
- HVAC and climate-control issues: A/C compressor clutch failure or refrigerant leaks, and heater core or blend-door problems can reduce comfort.
- Brakes and related components: Premature rotor wear, caliper sticking, or ABS sensor issues leading to warning lights or reduced braking performance.
As with many older luxury sedans, problems often correlate with mileage and maintenance history. Regular fluid services and timely seal replacements can mitigate several of these concerns.
Second-generation Acura RL (2005–2012)
Key reliability concerns for this era
The 2005–2012 RL introduced more advanced electronics and the SH-AWD system, which improved performance but also introduced its own failure points as the cars aged. The issues below are among the most frequently reported by owners and technicians.
- Automatic transmission wear: The five-speed automatic is commonly cited for rough shifts, shuddering, or transmission failure in higher-mileage examples.
- SH-AWD system and rear differential concerns: Clutch-pack wear in the torque-vectoring rear differential can cause grinding noises, vibration, or warning codes, sometimes requiring costly service.
- Power steering rack leaks: Leaks in the rack and pinion or associated lines can lead to low steering fluid and heavier steering efforts over time.
- Suspension and steering component wear: Front lower control arms, bushings, tie rods, and related parts wear with age, compromising ride quality and alignment.
- Engine management/electrical issues: Mismatches or faults in sensors, misfires tied to ignition components, navigation/infotainment glitches, and occasional airbag system warnings are reported.
- Braking system and wheel-speed sensors: ABS/traction-control warnings or erratic braking behavior can stem from sensor or wiring problems.
- HVAC and climate-control reliability: Climate-control unit failures, heater core issues, and A/C performance degradation are noted in some vehicles.
Owners with well-documented maintenance histories report the problem set is manageable when the vehicle is kept up-to-date on service, though SH-AWD-related issues can be expensive to remedy when they appear.
Maintenance tips to prevent common RL issues
Proactive care can significantly reduce the likelihood and impact of the problems described above. The following recommendations reflect common industry guidance and owner experiences for aging RL models.
- Follow the manufacturer’s transmission service schedule: use the correct fluid specification, monitor for shifting irregularities, and address signs of slipping or harsh shifting promptly to prevent major failures.
- Regularly inspect for leaks and address them early: check valve covers, rear main seal, oil pan, water pump, hoses, and cooling system components; replace gaskets and seals as needed to prevent engine damage.
- Monitor the SH-AWD system (where equipped): service rear differential fluid and inspect the torque-vectoring components at recommended intervals to avoid clutch-pack wear and related noises.
- Keep the suspension and steering components in good condition: inspect control arms, bushings, ball joints, tie rods, and alignment; replace worn parts to maintain handling and tire life.
- Address electrical and infotainment issues proactively: run periodic diagnostics for SRS warnings, battery and alternator health, and infotainment software updates to minimize glitches.
- Maintain brake components and ABS sensors: replace worn pads and rotors on schedule, and inspect wheel-speed sensors and wiring to prevent warning lights and reduced braking performance.
- plan routine HVAC care: service A/C with refrigerant as needed, and check climate-control modules and actuators to avoid comfort-related failures.
- Adhere to engine-care intervals for timing belt/chain and water pump where applicable: replace per OEM intervals to prevent belt failures or overheating situations.
By staying ahead of wear and promptly addressing symptoms, RL owners can extend reliability and sustain resale value across generations.
Summary
The Acura RL spans two generations with a common core of robust engineering complemented by age-related wear. Transmission, drivetrain, suspension, hydraulic/steering components, and electronics emerge as the most frequent trouble spots, with SH-AWD models adding a layer of complexity and higher repair costs over time. Regular maintenance, attentive diagnostics, and timely component replacements are the best defense for keeping an RL on the road and performing as intended.