2020-2025 Toyota Highlander Front vs Rear Brakes: What Wears First and What to Replace

By Core Brake Parts Tech Team — Circleville, OH warehouse

On a 2020-2025 Toyota Highlander the front brakes almost always wear out first, because the front axle does most of the stopping work every time you brake. The rear brakes are also discs, and they are not a set-and-forget system: they carry the electric parking brake, and servicing them takes one extra step the fronts do not. Here is how the two ends differ, what wears, and what to replace together.

How the Highlander's Brakes Are Laid Out

The fourth-generation Highlander uses four-wheel disc brakes. Aftermarket catalog data for the 2020-2024 models lists a vented one-piece rotor at both ends: 340 mm (about 13.4 inches) in front and 338.2 mm (about 13.3 inches) in the rear. The two rotors are close in diameter, but they are not interchangeable. They mount differently, the pad shapes are different (the front pads use FMSI shape D2304 and the rears use D2305), and the rear assembly works with the parking-brake mechanism.

Toyota's own quick reference guides for the Highlander and Highlander Hybrid show that the parking brake is electric. There is no lever or pedal: a switch on the center console sets and releases it, and an automatic mode can set it every time you shift into Park. The same guides describe a Brake Hold function that keeps the brakes applied at a stop until you press the accelerator. Both features matter when you service the rear brakes.

Catalog listings confirm these sizes for 2020-2024. If you own a 2025, confirm fitment by VIN or with the vehicle-specific listing before you order, since mid-cycle changes do happen.

Why the Front Brakes Wear First

When a vehicle slows down, its weight shifts forward. That loads the front tires and unloads the rear, so the brake system is proportioned to send most of the clamping force to the front. On a three-row SUV like the Highlander, carrying passengers and cargo, the front pads and rotors take the most heat and the most wear. That is normal, and it is why front pads are the most common brake job on this vehicle.

The rear brakes still wear, and on some Highlanders they wear sooner than owners expect. Things that speed up rear wear include:

• Stability and traction control. These systems brake individual wheels, including the rears, to control wheel spin and slides.
• Heavy loads and towing. More weight over the rear axle puts more work on the rear brakes.
• Parking-brake drag. If the electric parking brake does not fully release, or a rear caliper slide pin is seized, the rear pads rub constantly.
• Rust. Rear rotors run cooler and see less use, so in salt-belt states they can pit and scale before the friction material is gone.

Hybrid Models: A Different Wear Pattern

The Highlander Hybrid adds regenerative braking. As the U.S. Department of Energy's fuel economy site explains, regenerative braking uses the forward motion of the wheels to turn the electric motor, which generates electricity and helps slow the vehicle. Toyota's hybrid quick reference guide even advises avoiding sudden stops to get the most regenerative braking energy.

The practical result is that the friction brakes on a hybrid often do less work, so pads can last longer. The catch is that parts that do less work are more likely to seize or rust. On a hybrid Highlander, inspect caliper slide pins, pad abutment clips and rotor surfaces at every tire rotation, not just when the pads look thin.

Symptoms and How to Tell Which End Needs Work

Use the symptom to point you toward the right axle, then confirm by looking.

• Squeal when braking that goes away when you let off: often a pad wear indicator contacting the rotor. Check pad thickness at both ends.
• Steering wheel shake under braking: usually front rotor thickness variation. The fronts do most of the stopping, so they show it in the steering.
• Pulsation felt in the seat or pedal but not the wheel: can point to the rear rotors.
• Grinding: pad backing plate on rotor. Stop driving on it; the rotor is being damaged.
• Hot wheel, burning smell, or one rear wheel much dirtier than the other: a dragging rear caliper or a parking brake that is not releasing.
• Parking brake warning or message in the instrument cluster: an electric parking brake fault. Have it scanned before replacing parts.

With the wheels off, measure the lining on both the inner and outer pads, and measure rotor thickness with a micrometer against the minimum stamped on the rotor or listed in the factory service information. Uneven inner and outer pad wear points to sticking slide pins.

What to Replace, and What to Replace With It

Brakes are always done in axle pairs: both fronts or both rears, never one side. For most Highlander owners the first brake job is front pads and rotors. Many owners replace rotors along with pads rather than resurfacing, especially if the rotors are near minimum thickness or show hard spots.

• Front job: pads, rotors, new abutment clips and fresh brake lubricant on the slide pins. A kit such as our 2020-2025 Highlander front drilled and slotted rotor and ceramic pad kit puts the matched parts in one box.
• Rear job: pads and rotors as a pair, with new hardware. Check that both rear calipers release fully and that the parking brake operates normally before and after.
• Every job: inspect the brake hoses for cracks and check the fluid. Brake fluid absorbs moisture over time, so follow the fluid type and change schedule in your owner's manual.

For daily driving, ceramic brake pads are the usual choice: quiet and low dust. Browse replacement brake rotors, complete Power Stop brake kits, or brake hardware kits for clips and pins.

How Hard Is the Job?

Front brakes are a straightforward DIY job for anyone with a floor jack, jack stands, a torque wrench and basic hand tools. Remove the caliper, hang it so the hose is not stretched, swap pads and rotor, clean and lubricate the slides, and torque every fastener to the value in the factory service manual.

Rear brakes add the electric parking brake. The rear caliper pistons cannot simply be pushed back while the parking-brake actuator is holding them. The system must first be put into its service (maintenance) mode, either with a scan tool that supports Toyota's electric parking brake or with the procedure in the factory service information. Forcing the pistons back without doing this can damage the actuator. After the job, take the system out of service mode, pump the pedal until it is firm, and confirm the parking brake applies and releases cleanly before you drive.

After either job, bed in the new pads with a series of moderate stops from speed, without holding the brakes at a full stop, so the pads lay an even transfer layer on the rotors.

Recalls and Known Issues

As of this writing, the NHTSA recall listings for the 2020 through 2025 Highlander do not include any campaign against the brake system; the listed recalls cover items such as air bags, bumpers, tires and seats. Brake service on this generation is normal wear maintenance. Always run your own VIN through NHTSA or a Toyota dealer, since new campaigns can be added at any time.

Frequently Asked Questions

Do the front brakes on a Highlander wear faster than the rear?

Yes, in normal driving. Weight shifts forward when you brake, so the front brakes do most of the work and usually need pads first. Check the rears whenever you do the fronts, because rust, towing or a dragging parking brake can wear them early.

Are the front and rear rotors the same on a 2020-2024 Highlander?

No. They are close in diameter, 340 mm front and 338.2 mm rear, but they mount differently and use different pad shapes. Order them by position.

Do I need a scan tool to change the rear brakes?

The rear calipers work with the electric parking brake, which must be placed in service mode before the pistons are retracted. A scan tool with Toyota electric parking brake functions is the common way; follow the factory service information for the exact procedure.

Do Highlander Hybrid brakes last longer?

Often yes, because regenerative braking does part of the slowing. But lightly used brakes are prone to seized slide pins and rusty rotors, so inspect them regularly rather than waiting for noise.

Should I replace pads and rotors at the same time?

On most Highlanders it is the better value. New pads on worn or uneven rotors can cause noise, pulsation and shorter pad life. Replace in axle pairs, with new hardware.

Sources

1. Toyota 2022 Highlander Quick Reference Guide - electric parking brake switch and Brake Hold on Highlander and Highlander Hybrid
2. Toyota 2021 Highlander Hybrid Quick Reference Guide - electric parking brake automatic mode; regenerative braking tip
3. Power Stop catalog listings for the 2022 Highlander (Tdot Performance) - 340.0 mm front and 338.2 mm rear vented rotors; FMSI D2304 front and D2305 rear pads
4. Power Stop CRK8773 rear kit listing (Parts Geek) - rear disc rotor, 338.2 mm, fits 2020-2024 Highlander
5. Toyota Genuine Parts: 2020 Highlander front brake rotor 43512-0E060 - OEM front rotor and rotor inspection guidance
6. NHTSA recalls by vehicle: Toyota Highlander - recall campaigns listed for the Highlander, none on the brake system
7. FuelEconomy.gov: Hybrid Vehicle Technology - how regenerative braking slows the vehicle