Does a 2006 Toyota Highlander have a timing belt or chain?
Yes. The 2006 Toyota Highlander uses a timing chain, not a belt, across its common engine options (the 2.4-liter four-cylinder and the available 3.0-liter V6).
Understanding the timing system matters for maintenance planning and reliability. Both engine choices in the 2006 Highlander rely on a timing chain rather than a belt, which means there isn’t a regular belt-change interval. Below is a closer look at the engines and what to watch for with timing chains.
Engine options in the 2006 Highlander
Here are the engines typically found in the 2006 Highlander and their timing mechanisms:
- 2.4-liter four-cylinder (2AZ-FE) — timing chain; no scheduled timing belt replacement.
- 3.0-liter V6 (1MZ-FE) — timing chain; similarly, no belt-change interval.
These engines use timing chains with hydraulic tensioners and guides, designed for long life. However, chain components can wear over time and may require inspection if symptoms appear.
Timing chain maintenance and signs of wear
To help owners understand what to monitor and when maintenance might be needed:
- Timing chains generally last the life of the engine, but tensioners and guides can wear. A rattling noise on startup or under load can indicate wear that needs inspection.
- There is no regular belt replacement interval for these engines. Chain failure is less common than belt failure but can cause serious engine damage if it occurs.
- During major service milestones or if symptoms arise, a mechanic may inspect or replace worn chain components, tensioners, or guides as needed based on mileage and condition.
Always consult a trusted mechanic for an accurate diagnosis and follow the recommended maintenance plan for your vehicle’s specific engine and mileage.
How to verify which engine you have
To confirm whether your Highlander has a 2AZ-FE or a 1MZ-FE engine, check the engine code stamped on the engine block or use the vehicle’s VIN to decode the exact motor. The engine variant determines the precise timing-system details and any related maintenance notes.
Official service manuals and Toyota technical resources provide the definitive guidance for your exact VIN and engine combination.
Summary
For a 2006 Toyota Highlander, expect a timing chain rather than a timing belt across the main engine options (2.4L 2AZ-FE or 3.0L 1MZ-FE). Chains are designed for long life but rely on tensioners and guides that can wear over time. Verify the exact engine using the VIN if you’re planning maintenance, and stay alert for unusual noises or performance changes that could indicate chain-related wear.
How much does it cost to replace a timing belt on a 2006 Toyota Highlander?
The average cost to replace the timing belt on a 2006 Toyota Highlander is between $950 and $1,300, though the range can vary from $400 to over $1,800 depending on the shop, parts, and whether the water pump is included. This cost includes parts (belt, tensioners, and idler pulleys) and labor, and many mechanics recommend replacing the water pump at the same time for a comprehensive repair.
Cost breakdown and factors
- Average range: Between $950 and $1,300 for a full kit and labor from an independent mechanic, according to some sources.
- Broader estimate: The cost can fall anywhere between $400 and $1,000 or more, depending on the variables.
- Includes water pump: Replacing the water pump is a recommended service that adds to the total cost, but the additional labor is minimal since the timing belt is already removed.
- Parts included: A timing belt kit typically includes the belt, tensioners, and idler pulleys.
- Labor time: The job can take 3-5 hours of labor, depending on the shop's experience and the specific vehicle.
- Location matters: Prices can vary significantly depending on your geographic location and the specific shop you choose.
How to get the best quote
- Get quotes from several local shops, including those that specialize in imports or Toyotas.
- Ask for an itemized quote that includes parts, labor, and any other recommended parts (like the water pump or seals).
- Consider getting a quote for both a standard timing belt-only replacement and one that includes the water pump for a complete comparison.
Does a 2006 Toyota have a timing belt or chain?
If it's a 4 cylinder it's a chain not a belt. If it's a V6 they're fairly safe but at that age and mileage it should be replace regardless along with the water pump, tensioner and idler.
What year do highlanders have timing chains?
Does That Toyota Have a Timing Belt or Chain? A Handy Chart Going Back to 1990 Will Tell You
| Model | Year | Belt/Chain/Gear/ Neither (EV) |
|---|---|---|
| Cressida | 1990-1992 | Belt |
| Echo | 2000-2005 | Chain |
| FJ Cruiser | 2007-2014 | Chain |
| Highlander | 2001-2007, 2009-2014 | Chain |
What year to stay away from a Toyota Highlander?
Years to avoid in the Toyota Highlander include 2003, 2008, 2014, 2015, and 2020 due to common issues like transmission problems, oil leaks, and technology glitches. Other problematic years to consider are 2001-2007 (engine and climate control issues) and 2016-2019 (varying issues including potential oil leaks in some models).
This video discusses problems with the Toyota Highlander from 2020 to 2025, including paint issues: 54sCarnivautoYouTube · Feb 11, 2025
Toyota Highlander years to avoid
- 2001–2007: Prone to engine overheating, head gasket failures, and climate control issues like AC compressor and blower motor problems.
- 2003: A big year for issues, particularly engine oil sludge buildup and premature transmission wear, according to Regan Motors Inc and Clutch.
- 2008: A redesigned model that experienced oil cooler line leaks, which can cause engine damage if not addressed, and lower-quality interior components.
- 2014: A recall was issued for the second-row seat assembly that may not lock correctly into the seat track, and there were also reports of issues that might be linked to the transmission, says Clutch and Reddit users.
- 2015: Experienced growing pains from its redesign, with various reports of growing issues, according to Regan Motors Inc and Clutch.
- 2020: Experienced early transmission and software problems, say Clutch and Reddit users.
You can watch this video to learn more about common problems with the 2020-2025 Toyota Highlander: 51sChris DrivesYouTube · Jul 5, 2025
