Does the GX470 have air suspension?
In short, no—the Lexus GX470 does not come with factory air suspension. It relies on conventional coil-spring suspension, and in many markets some GX470s were equipped with KDSS (Kinetic Dynamic Suspension System) to improve off-road articulation, rather than air-spring hardware.
Suspension layout of the GX470
The GX470 uses a traditional coil-spring setup with an independent front suspension and a rear multi-link arrangement. Depending on the market and model year, some GX470s were equipped with KDSS, which uses hydraulic connections to decouple and re-link the front and rear sway bars to improve wheel travel and stability off-road. Air springs, which use air bags to adjust ride height, were not a standard or widely offered feature on the GX470.
The following points summarize the typical suspension configuration you’ll encounter on GX470 models:
- Front suspension: independent with a double-wishbone design and coil springs
- Rear suspension: multi-link with coil springs
- Optional KDSS: Kinetic Dynamic Suspension System, available on some markets/trim levels
- No factory air suspension: air springs were not commonly offered on the GX470
In summary, the GX470’s ride height and handling are not governed by air springs. Instead, it relies on coil springs with the potential addition of KDSS to enhance off-road capability, depending on the region and year.
How to verify whether a GX470 has KDSS
If you’re unsure whether a specific GX470 has KDSS, check for hardware clues and documentation that indicate the system’s presence.
- Inspect the undercarriage for hydraulic lines running to the front and rear anti-roll bars, which are part of the KDSS setup
- Look for a KDSS badge or labeling on the tailgate, engine bay, or owner’s manual/window sticker
- Check the window sticker or VIN/build sheet for KDSS as a listed option
- Consult a Lexus dealer or a qualified mechanic who can verify KDSS via the VIN or service records
If those indicators are absent, the vehicle may not be equipped with KDSS and would rely on the standard coil-spring setup without the dynamic sway-bar decoupling feature.
Maintenance considerations and common issues
For GX470s with KDSS, routine inspection and maintenance of the hydraulic components is important, as the system can develop leaks or wear in hoses and cylinders. If you notice unusual handling, noises from the suspension, or a noticeable change in ride height, have the KDSS lines and cylinders inspected by a professional. For GX470s without KDSS, standard coil-spring suspension requires typical checks for worn bushings, struts, and springs, just like many mid-size SUVs.
In practice, owners should:
- Periodically inspect for signs of hydraulic leaks around KDSS components
- Monitor ride height and handle any uneven leveling or sagging promptly
- Follow manufacturer-recommended maintenance intervals for suspension components, including dampers and bushings
Whether or not a GX470 has KDSS, timely maintenance helps preserve ride quality and off-road capability.
Summary
The GX470 does not feature factory air suspension. Its standard suspension is coil-spring-based, and some models offered KDSS to improve off-road articulation. Air suspension is not a typical GX470 option, unlike some LX470 configurations. To confirm a specific vehicle’s setup, check the VIN, window sticker, or consult a dealer for KDSS indicators and documentation.
Which Lexus models have air suspension?
Lexus models that have featured air suspension include the LS sedan, the RX crossover, the LX large SUV, and the GX SUV. While the LS has a full four-corner system, the GX 460's air suspension is typically located on the rear axle only and is available on certain trims. The RX is also available with an air suspension system on some configurations, like the F Sport model.
Full air suspension (four corners)
- Lexus LS: This model has offered a more complex system that includes air suspension on all four wheels, with features like height adjustment and "Access Mode" for easier entry and exit.
- Lexus LX: The LX 700h comes standard with an adaptive air suspension with height control.
Rear air suspension only
- Lexus GX: The GX 460 has available rear air suspension (Active Height Control) on premium and luxury trims, which replaces the coil springs with airbags on the rear axle.
Other models with air suspension options
- Lexus RX: Some configurations, including certain F Sport models, offer air suspension.
- Previous models: Some previous models like the GS sedan (GS300/350/430/450h/460) and IS sedan (IS250/350) had air suspension options available.
Does the GX have air suspension?
Yes, the Lexus GX has a rear air suspension system on some models, particularly the higher trims like the Luxury, which comes with an Active Height Control (AHC) system. This system uses airbags instead of traditional coil springs on the rear axle and can be manually adjusted for different ride heights. It's also sometimes paired with the Kinetic Dynamic Suspension System (KDSS).
- Function: The rear air suspension is designed to provide a comfortable ride and can be used to adjust the vehicle's height.
- Adjustment modes: The system has several modes, including a "normal" mode, a lower mode for easier loading (operable only when in park), and a raised mode for improved ground clearance at low speeds.
- Trim level: Air suspension is typically found on the more premium or luxury trims and was available on GX 460 models from 2010 onwards.
- Potential issues: Like any air suspension, it can have potential issues, such as leaks, and some owners choose to replace the system with a conventional spring and shock setup later in the vehicle's life.
What year to avoid Lexus GX470?
The 2003 Lexus GX470 is often cited as the worst model year due to drivetrain issues like clunking noises, and the 2006 model also received a high number of complaints, particularly for drivetrain problems. Other years to be cautious about include models with the optional KDSS system for off-road enthusiasts due to potential costs, and early models (2004 and 2005) for dashboard cracks, dry-rotted wheels, and less engine power compared to later models.
You can watch this video to learn about common problems to look for when buying a Lexus GX470: 52sRob DrivesYouTube · Feb 11, 2021
Specific model years to be cautious about
- 2003 Lexus GX470: Considered the worst model year by some sources due to specific drivetrain issues, such as clunking and squealing noises, and higher repair costs.
- 2006 Lexus GX470: Received a high number of owner complaints, particularly regarding drivetrain problems.
- Models with KDSS: If you plan to heavily modify the vehicle for off-roading, models with the Kinetic Dynamic Suspension System (KDSS) may be best to avoid due to potential complexity and cost of repairs or modifications.
Common issues across the GX470 lifespan
- Drivetrain issues: Reports of clunking and squealing noises have been associated with certain model years.
- Dashboard cracks: A common and potentially expensive issue across many model years, especially in warmer climates.
- Timing belt and water pump: A crucial maintenance item. The timing belt should be replaced around every 90,000 miles, or the vehicle should have a documented history of this replacement.
- Navigation system: The built-in navigation system is outdated and can be difficult to upgrade or repair. Many owners recommend using a smartphone for navigation instead.
- Suspension and transmission: During a test drive, listen for unusual noises from the suspension and check for smooth transmission shifts, as these can indicate wear.
This video discusses the maintenance of a Lexus GX470, including the timing belt replacement: 58sCar WizardYouTube · Feb 22, 2022
Does the Lexus GX470 have air suspension?
The problem with your GX 470's air suspension could be as simple as a torn airline or leaky air spring. Repairing these items is inexpensive and won't take too much time at the mechanic. However, if one of the components on your Lexus' air suspension has gone, the rest are sure to follow.
