2009-2013 Toyota Matrix Front vs Rear Brakes: What Wears First and What to Replace

By Core Brake Parts Tech Team — Circleville, OH warehouse

On a 2009-2013 Toyota Matrix the front brakes almost always wear out first. The fronts do most of the stopping, so the front pads usually need replacing before the rears. Every Matrix in these years has disc brakes at all four wheels, but the rotor sizes depend on the engine. That matters more than anything else when you order parts. Below: how the system is laid out, how to tell which end is worn, and what to replace together.

How the 2009-2013 Matrix brake system is set up

Toyota's press materials for this generation say four-wheel disc brakes are standard on every Matrix. There are vented rotors up front and solid rotors in the rear. Anti-lock brakes (ABS), Electronic Brake-force Distribution (EBD) and Brake Assist are standard. Vehicle Stability Control with traction control became standard from the 2010 model year. The 2012 press kit also lists Smart Stop Technology, a brake-override system that gives the brake pedal priority over the throttle.

The big split is between engines. The base Matrix has the 1.8-liter four-cylinder (2ZR-FE). The Matrix S, and the XRS in the years it was offered, have the 2.4-liter (2AZ-FE), and all-wheel drive came only with the 2.4. Each engine gets its own rotor sizes:

Toyota's 2012 press kit gives the same setup rounded slightly differently: 10.7 in. front and 10.1 in. rear on the base car, and 11.6 in. front and 10.9 in. rear (11.0 in. AWD) on the Matrix S. Either way, 1.8-liter and 2.4-liter parts are not interchangeable. Before you order rotors or pads, check which engine you have. The label on the engine cover or your registration will tell you. Also note FWD or AWD.

Why the front brakes wear first on a Matrix

When you brake, the car's weight shifts forward onto the front tires. That gives the front wheels more grip, so the system is designed to have them do most of the work. The Matrix also carries its engine and transaxle over the front wheels. That is why the fronts get the larger vented rotors: the vents help them shed the extra heat.

The rears still do real work. EBD adjusts rear brake pressure based on load and conditions. Stability control and traction control also apply individual brakes, including the rears, to keep the car straight or limit wheelspin. On a car driven mostly in town, or one that trips traction control often on snow, the rear pads can wear faster than you might expect. So don't assume the rears are fine just because the fronts were done last time. Measure them.

Symptoms: how to tell which end needs work

• Squealing or scraping while braking. Toyota's owner's manual says a squealing or scraping noise comes from the brake pad wear limit indicators. It says to have the pads checked and replaced as soon as possible, because rotor damage can result if you wait. On a jack stand you can usually find the noisy corner by spinning each wheel by hand and listening.
• Vibration in the steering wheel when braking. This usually points to the front rotors. Vibration felt through the seat or the whole car more often comes from the rear rotors.
• Pulling to one side when braking. The owner's manual lists this as a symptom that needs service. Common causes are a sticking caliper slide pin, a seized caliper piston, or uneven pad wear on one side.
• Brake warning light on. The manual says the brake system warning light means low brake fluid or a brake system malfunction. It also lights when the parking brake is not fully released. Brake fluid drops slowly as pads wear. If the reservoir keeps needing fluid, the manual warns that this can mean a serious problem, such as a leak.
• Parking brake lever travels too far. The manual gives a normal lever travel range. If the lever comes up well past that, the parking brake needs adjusting or its linings are worn.

To measure, pull the wheels and look at the pad friction material through the caliper window. Toyota's owner's manual lists a brake pad wear limit of 0.04 in. (1.0 mm). That is the absolute minimum, not a target. Most techs replace pads well before that point so the backing plate never touches the rotor.

The fix and which parts to use

Front brakes: On most Matrix brake jobs, the front pads and rotors are replaced together. The rotors are fairly light cast parts. Once they are worn close to their minimum thickness, grooved, or making the pedal pulse, resurfacing leaves little metal to spare, and new rotors usually cost about the same as the machining. Ceramic pads suit this car well: they run quiet and make less dust, and a Matrix is mostly a commuter and cargo hauler. Browse ceramic brake pads and replacement brake rotors, and match them to your engine size.

Rear brakes: The rear pads are smaller and usually last longer, but check them every time the fronts are done. If they are close to half worn, doing both ends together saves a second job. The parking brake has its own linings, and the owner's manual lists a separate wear limit for them. Inspect and adjust those whenever the rear rotors are off.

Doing both ends at once: If both ends are due, a matched kit is the simplest route. Our 2009-2013 Toyota Matrix front and rear rotors and ceramic pads kit puts all four rotors and both sets of pads in one box. Confirm the listing matches your engine and drivetrain before you order. For single-end jobs, see our full brake pads selection.

What to replace at the same time

• Pad hardware (abutment clips and shims). Worn clips let pads rattle and hang up, which causes noise and uneven wear. New brake hardware kits are cheap and should go on with every pad set.
• Caliper slide pins and boots. Clean them, look for torn boots, and relubricate with high-temperature brake grease. A seized pin is the most common cause of one pad wearing much faster than the other.
• Calipers, if needed. A leaking piston seal, a torn piston boot, or a piston that will not push back smoothly means the caliper should be replaced, not reused. See brake calipers.
• Brake fluid. Toyota specifies FMVSS No. 116 DOT 3 or SAE J1703 brake fluid for the Matrix. The manual warns that brake fluid absorbs moisture from the air and that excess moisture can cause a dangerous loss of braking efficiency. It says to use only newly opened fluid. A flush is a sensible add-on to a full brake job if the fluid is dark or its history is unknown.
• Brake hoses. If a rubber hose is cracked or bulges when the pedal is pressed, replace it while the system is already open.

How hard is the job?

A pad and rotor job on a Matrix is one of the easier brake jobs out there. The front calipers come off with two guide-pin bolts, and the caliper bracket unbolts to free the rotor. Rust on the hub face can make a rotor stick, so clean the hub face before you fit the new rotor, or it may not sit flat and can cause a pulsation. The rear takes a little more effort because of the parking brake linings and cable. Torque every fastener to the values in the factory service manual, and tighten the lug nuts in a star pattern with a torque wrench, not an impact gun.

Before you drive, pump the pedal until it is firm. Then bed in the new pads with a series of moderate stops from moderate speed, without coming to a full stop and sitting on hot brakes. Bedding lays down an even transfer layer on the new rotors, which prevents early vibration.

One more thing for 2009-2010 owners in cold states. NHTSA campaign 09V338000 covered certain 2009-2010 Corolla and Corolla Matrix vehicles with the 1.8L engine that were sold or registered in listed cold-weather states. In extreme cold, moisture from the crankcase ventilation could freeze in the intake manifold's brake vacuum port and reduce power assist. The remedy was a redesigned intake air connector that moves the vacuum port. If your 1.8L Matrix ever feels like it loses brake assist in deep cold, have a Toyota dealer check whether that recall was done. Your pads and rotors will not fix it.

Frequently Asked Questions

Does the 2009-2013 Toyota Matrix have rear drum brakes?

No. Toyota's press materials for this generation list four-wheel disc brakes as standard on every Matrix, with solid rotors in the rear. The parking brake uses its own linings, which Toyota lists separately with their own wear limit in the owner's manual.

Are 1.8L and 2.4L Matrix brake parts the same?

No. The 2.4-liter Matrix S and XRS use larger rotors front and rear than the 1.8-liter base car, and the AWD rear rotor is slightly larger again. Always order by engine and drivetrain.

How thin can Matrix brake pads get before replacement?

Toyota's owner's manual lists a brake pad wear limit of 0.04 in. (1.0 mm). That is the bare minimum. Replace them well before that, and right away if you hear the wear indicators squealing.

Should I replace front and rear brakes at the same time?

Only if both ends are worn. The fronts usually wear first, but EBD and stability control use the rears too, so measure the rear pads every time. If the rears are close to half worn, doing all four corners at once saves labor.

What brake fluid does a Toyota Matrix use?

Toyota specifies FMVSS No. 116 DOT 3 or SAE J1703 brake fluid. Use fluid from a freshly opened container, because brake fluid absorbs moisture from the air.

Why does my Matrix squeal when I brake?

The most common cause is the pad wear indicator touching the rotor, which Toyota says means the pads need checking and replacing soon. Other causes are worn or missing shims and clips, or glazed pads. Inspect the pads before you assume it is just noise.

Sources

1. Toyota USA Newsroom - 2010 Matrix - four-wheel discs standard, rotor sizes by engine and AWD, ABS/EBD/Brake Assist, standard VSC with TRAC
2. Toyota USA Newsroom - 2012 Matrix - 2012 rotor sizes, Smart Stop Technology, engines and AWD availability
3. 2010 Toyota Matrix Owner's Manual (Toyota) - wear indicator warning, 1.0 mm pad wear limit, parking brake lining limit, DOT 3 / SAE J1703 fluid, brake warning light meanings
4. NHTSA recall data - 2009 Corolla Matrix - campaign 09V338000 brake vacuum port freezing recall on 1.8L cold-state vehicles