2009 Acura Tsx

The A/C compressor on the 2009-2014 TSX with the K24Z3 engine is prone to premature failure, often between 60,000-100,000 miles. The compressor clutch bearing wears out first, producing a squealing noise when the A/C engages. Complete compressor seizure can damage the serpentine belt and contaminate the refrigerant system with metal debris.

Replace the A/C compressor, receiver-dryer, and expansion valve. If the compressor seized and shed debris, a complete system flush including the condenser is mandatory. Use the specified ND-OIL 8 compressor oil and R-134a refrigerant. Check the serpentine belt for damage and replace if it was contaminated by compressor debris.

The electric power steering assist pump on the 2009-2014 TSX can develop a whining or moaning noise, particularly noticeable at low speeds and during parking maneuvers. The noise is caused by the EPS pump motor wearing internally. The steering may also feel slightly heavier or inconsistent when the pump is failing.

The EPS pump assembly needs to be replaced if the noise is excessive. Honda/Acura issued a TSB for EPS pump noise on certain 2009-2012 TSX models. Check with the dealer for any remaining coverage or goodwill assistance. The pump is located near the steering column and requires moderate disassembly to access.

The 2009-2014 TSX, particularly in white and silver colors, is susceptible to clear coat peeling and delamination, especially on the roof, hood, and trunk lid. The clear coat separates from the base coat in large sheets, creating an unsightly appearance that worsens rapidly once it begins. UV exposure accelerates the deterioration.

Once the clear coat has begun peeling, the affected panels must be sanded, reprimed, and repainted. Contact Acura Customer Relations to inquire about paint goodwill coverage, as Acura has provided assistance to some owners. Regular waxing and ceramic coating when the paint is still intact can slow clear coat deterioration on unaffected areas.

The starter motor on the K24 engine in the TSX can fail without warning, leaving the vehicle unable to start. Symptoms before complete failure include a slow cranking sound, a single click when turning the key, or intermittent no-start conditions. The starter solenoid contacts wear out over time, particularly in vehicles with stop-and-go driving patterns.

Replace the starter motor. The starter on the K24 TSX is accessible from the top of the engine, making replacement straightforward. OEM and quality aftermarket remanufactured starters are both acceptable. If the vehicle has been experiencing slow cranks, replace the starter proactively to avoid being stranded.

The rear trailing arm compliance bushings on the TSX wear out over time, causing a clunking noise from the rear over bumps and during acceleration/deceleration transitions. Worn bushings also allow the rear alignment to shift, causing uneven inner-edge tire wear on the rear tires. The issue typically becomes noticeable after 80,000 miles.

Replace both rear trailing arm bushings. The bushings can be pressed in on the vehicle or with the trailing arm removed. Aftermarket polyurethane bushings provide improved durability and more precise rear suspension geometry. A rear wheel alignment is mandatory after bushing replacement to correct toe angle.