2024-2025 Lexus TX Shock Absorber: AVS Warnings and Early Failure Symptoms

Compatibility Warning: Standard vs. Adaptive Variable Suspension (AVS)

You MUST verify which system the vehicle has before purchasing a replacement part. Installing the wrong type will result in poor handling, system warning lights, and a loss of suspension control.

• Adaptive Variable Suspension (AVS): This electronic system is standard on 2024-2025 TX500h F Sport Performance models. For the 2025 model year, it is also standard on the TX 350 AWD F SPORT Handling grade. AVS shocks have an electrical connector on the top for the actuator that controls damping firmness.
• Standard Suspension: Base and non-F Sport models are equipped with a standard, non-electronic suspension. These shocks will not have the wiring or actuator for the AVS system.

Known Issues and Owner Complaints (2024-2025 Models)

As a new vehicle, long-term reliability data is limited. However, early owner reports and technical service bulletins for related models have highlighted a few key areas of concern.

Squeaking Front Shock Absorbers

Some owners of the 2024 TX500h have reported a persistent "bird-like squeaking noise" coming from the front shock absorbers, especially when going over speed bumps. In some cases, dealership technicians have had difficulty diagnosing and resolving the issue, even after multiple service visits. This suggests a potential early-life component issue that may not be easy to identify with a simple visual inspection.

Clicking or Popping Noise When Turning

A clicking, popping, or knocking sound from the front of the vehicle during turns is a complaint shared with the Lexus TX's sister vehicle, the Toyota Grand Highlander. This noise is most often caused by a faulty front CV axle, not the shock absorber. There is a Technical Service Bulletin (TSB L-SB-0033-24) 🎬 Watch: See the factory TSB fix for this clicking noise. related to this issue. It is important to differentiate this turning-specific noise from the squeaks or clunks over bumps that are more typical of a failing shock absorber.

Harsh Ride Quality on F Sport Models

Several reviewers and owners have noted that the ride quality on F Sport models equipped with the Adaptive Variable Suspension can feel surprisingly stiff, jarring, or "crunchy" on poorly maintained roads. While the suspension is designed to be sporty, some find the trade-off in comfort to be significant.

Vehicle-Wide Recalls

While not directly related to the shock absorbers, it's worth noting that the 2024 Lexus TX was subject to a significant safety recall (NHTSA ID: 24V-461) for curtain shield airbags that may not deploy correctly. This is part of the normal "teething issues" for an all-new model and highlights that early-production vehicles can have unforeseen problems.

Symptoms of a Failing Shock Absorber

A bad shock absorber, whether standard or AVS, can compromise safety and ride comfort. Here are the most common symptoms to watch for.

• Bouncy or Unstable Ride: The vehicle continues to bounce multiple times after hitting a bump or pothole. This can also feel like a "floaty" or disconnected ride at highway speeds.
• Nose-Diving and Squatting: The front end of the vehicle dips excessively when braking, or the rear end squats during acceleration.
• Fluid Leaks: Oily or greasy residue on the body of the shock absorber is a clear sign that the internal seals have failed and it needs replacement.
• Clunking or Squeaking Noises: As mentioned, a "bird-like squeak" has been reported on the TX. More generally, clunking or knocking sounds when driving over bumps can indicate worn shock absorber mounts or internal failure.
• Uneven Tire Wear: Worn shocks can cause tires to bounce, leading to scalloped or "cupped" wear patterns on the tread.
• Poor Handling and Body Roll: The vehicle may feel less stable in turns or crosswinds, with more noticeable swaying or leaning.

Buying a Used 2024-2025 Lexus TX Shock Absorber

Due to the vehicle's newness, most used shock absorbers will come from low-mileage, accident-damaged vehicles. A used OEM part can be a good value, especially for expensive AVS units, but careful inspection is mandatory.

Inspection Checklist:

1. Verify Compatibility (CRITICAL): First, confirm if you need a standard or AVS shock. Check the part number against dealer databases. Ensure it is for the correct model year, position (e.g., Front Left), and drivetrain (AWD). They are not interchangeable.
2. Inspect the AVS Actuator and Connector: For AVS shocks, closely examine the black plastic actuator on top. The housing should be free of cracks. Check that the electrical connector pins are straight, clean, and not corroded.
3. Check for Leaks: Thoroughly inspect the entire shock body for any signs of fluid leakage. A light misting of oil may be acceptable on older shocks, but any significant wetness or dripping is a sign of failure.
4. Examine Bushings: Check the condition of any rubber bushings at the mounting points. They should be intact, without major cracks, dry rot, or signs of being torn.
5. Look for Physical Damage: Avoid any shock with a bent piston rod, a dented body, or other damage that could indicate it was involved in a severe collision.

Cost Comparison for Shock Absorber Replacement

Prices are estimates as of late 2025 and will vary by supplier and location. The market for used and aftermarket parts for this new model is still developing.

Replacement Information

Replacing a shock absorber on a modern vehicle like the Lexus TX is a job for an experienced DIY mechanic or a professional technician. The front MacPherson struts require a spring compressor, which is a dangerous tool if not used correctly.

• Difficulty: 4/5 (Professional recommended)
• Replace in Pairs: It is critical to replace shocks in pairs (both fronts or both rears) to ensure even damping and stable handling. Replacing only one can be dangerous.
• Wheel Alignment: A four-wheel alignment is mandatory after replacing any shock or strut to ensure safety and prevent premature tire wear.
• AVS Actuator: On AVS models, the electronic actuator on top of the old shock must be carefully removed and reinstalled on the new unit. According to forum discussions on other Lexus models, AVS recalibration is typically not required after a simple shock replacement.

Frequently Asked Questions (FAQ)