How much is a coolant flush on a Toyota Highlander?

Prices for a coolant flush on a Toyota Highlander typically run from about $100 to $250 at independent shops for a full cooling-system service, with higher costs at a Toyota dealership—often $250 to $500 or more. The exact price depends on the model year, local labor rates, and whether you need a basic drain-and-fill or a complete system flush (and any required parts). These figures reflect typical market conditions in 2024–2025.

Pricing overview

Prices vary by service scope and shop type. The ranges below reflect typical prices in North America for a Highlander coolant service, including both drain-and-fill and full flush, at independent shops and dealers.

• Drain-and-fill or basic coolant service (independent shop): typically $80–$150.


• Full cooling-system flush (independent shop with machine and new coolant): typically $120–$250.


• Toyota dealership or specialty shop: typically $250–$500+, depending on model year and whether additional parts or labor are required.

Prices can be higher in some markets or if there are complications, such as a leaking radiator or thermostat replacement. Always obtain a written estimate before service and confirm the coolant specification to be used (often Toyota Genuine Long-Life Coolant).

What affects the price

The cost isn’t fixed; several factors influence the final bill. Here’s what can drive the price up or down:

• Model year and engine type: newer Highlands may require different coolant formulations or additional steps.


• Service scope: drain-and-fill versus a full flush with cleaner and machine-assisted circulation.


• Labor rates by location: urban areas and dealer services tend to be higher.


• Parts and coolant quality: Toyota-approved coolant versus generic alternatives; whether the coolant is included in the quote.


• Additional repairs: worn hoses, thermostat, radiator cap, or leaks can add to the cost.


• Warranty and service guarantees: some shops offer warranties on the work, which can affect price.

Understanding these factors helps you compare quotes and decide whether to proceed now or shop around for the best value.

What the service typically includes

Knowing what to expect helps you verify you’re getting a complete flush and proper coolant fill.

• Drain the old coolant from the radiator and engine block, and dispose of it properly.


• Flush the cooling system with a cleaning solution or machine to remove rust, sludge, and contaminants from the radiator, heater core, and passages.


• Refill with the correct coolant type and mixture for the Highlander (often Toyota Genuine Long-Life Coolant; color may vary by market).


• Bleed air from the system and bring the level up to the proper mark to ensure full circulation.


• Pressure-test the system for leaks; inspect hoses, radiator cap, and thermostat.


• Provide a service record and recommended maintenance intervals.

Ask for a written estimate that itemizes the flush, coolant type, disposal, and any extras so you can compare quotes accurately.

Choosing where to go

Deciding between a dealership and an independent shop involves weighing price against parts and expertise.

• Dealership vs independent shop: dealers use OEM parts and manufacturer-trained technicians; independents may offer lower prices and quicker turnaround.


• Coupons and promotions: seasonal deals can reduce the out-of-pocket cost.


• Coolant specification: confirm the shop will use Toyota-approved coolant; ask if the coolant is included in the price.


• Warranty on work: some shops provide a warranty on the flush and parts; confirm terms before service.

With a clear quote and verified coolant type, you can choose the option that balances cost and assurance for your Highlander.

Summary

For a Toyota Highlander, expect roughly $80–$150 for a basic drain-and-fill at an independent shop, $120–$250 for a full cooling-system flush, and $250–$500+ at a dealership or specialist, depending on model year and added parts. Costs vary by location and service scope; always get a written estimate and confirm the coolant specification before service.

Is a coolant flush worth the cost?

Benefits of Getting a Coolant Flush
Replacing antifreeze cooling fluid removes deposits and contamination that can block the even flow of coolant that keeps the engine running at a good temperature. A clean cooling system with fresh coolant lowers the likelihood of expensive repairs from engine overheating.

Can I flush coolant myself?

Yes, you can flush your car's coolant yourself, but it requires specific tools, safety precautions, and a careful process to avoid damaging your engine. The process involves draining the old coolant, flushing the system with water or a cleaning solution, and then refilling it with the correct fresh coolant. If you are unsure or lack the proper tools, taking it to a professional is a safer option, as a mistake can lead to costly engine damage.
 
This video demonstrates how to flush the coolant system of a vehicle: 1mValvoline Global OperationsYouTube · Nov 10, 2020
Before you begin

• Gather your supplies: You will need new coolant, distilled water, a drain pan, a radiator flush product (optional), a funnel, and basic hand tools. 
• Inspect your car: Check hoses and belts for any signs of wear, as a worn hose could be damaged during the process. 
• Safety first: Never perform a coolant flush with a hot engine. Allow the engine to cool completely to avoid burns and damage to the system. 

Step-by-step process

1. Drain the old coolant: Place a drain pan under the radiator and open the drain plug to empty the old fluid. Be sure to dispose of the old coolant properly, as it is toxic to pets and wildlife. 
2. Flush the system: Fill the system with distilled water or a mixture of water and a commercial radiator flush. Start the engine and let it run for up to 10 minutes with the heat on high to circulate the flush, then turn the engine off and let it cool again before draining. You may need to repeat this process until the water runs clear. 
3. Refill with new coolant: Once the system is drained, add new coolant. You will need to mix the concentrate with distilled water in the correct ratio or use a pre-mixed 50/50 solution. 
4. Final checks: After refilling, start the engine and allow it to run for a few minutes to work the air out of the system. Check the coolant level in the reservoir and top it off as needed. You may need to check and top off the level again after a week or so. 

You can also watch this video for a demonstration of the coolant flushing process: 59sBudget MechanicYouTube · Sep 18, 2024

How often should I change the coolant fluid on my Toyota Highlander?

every two years
If your coolant contains silicates, you should usually consider changing it every two years or after driving 30,000 miles. However, if you choose extended drain coolants, they can last up to five years or 100,000 miles before needing a change.

How much should a car coolant flush cost?

between $100 and $150
The cost of a coolant flush depends on your vehicle's coolant capacity, and whether or not you are flushing the system with chemicals or soap before refilling it. Typically, you can expect to pay between $100 and $150 for this service on most vehicles.