1999-2003 Toyota Solara Brake Caliper Problems and Replacement

By Core Brake Parts Tech Team — Circleville, OH warehouse

Most caliper problems on a 1999-2003 Toyota Solara come down to three things: slide pins that have lost their grease and started to bind, a piston or seal that has corroded with age, or a rubber brake hose that has deteriorated inside. The signs are a pull to one side, one pad worn far more than the other, a hot wheel after a drive, or a soft pedal. The fix is usually a replacement caliper on the affected corner, fresh mounting hardware, and pads (and often rotors) on both sides of that axle.

How the Solara's Caliper Setup Works

The first-generation Solara coupe and convertible shared its chassis and much of its brake hardware with the Camry of the same era. Every Solara has front disc brakes. At the rear, it depends on the car: Toyota's own parts catalog lists rear disc calipers for the 1999-2003 Solara across the 2.2L four-cylinder (5S-FE), 2.4L four-cylinder (2AZ-FE) and 3.0L V6 (1MZ-FE), while parts makers also catalog rear drums and shoes for some 2002-2003 cars. Before you buy anything for the back of the car, pull a wheel and look: a caliper hugging a rotor means rear discs, a round drum means shoes.

On the front, Toyota lists one caliper part number per side for all 1999-2003 Solaras regardless of engine (47750-06040 driver side, 47730-06040 passenger side). The rear is less tidy: Toyota lists two different rear caliper part numbers for these years, one set covering only 1999-2000 cars and one covering 1999-2003. That is the corner where ordering by year alone can go wrong, so match the rear caliper by VIN or by the part number on your old caliper.

These are sliding (floating) calipers: the piston pushes the inner pad, and the caliper body slides on greased pins to pull the outer pad in. That design is simple and reliable, but it only works if the pins move freely. On a car that is now more than twenty years old, they often do not.

Symptoms of a Bad Caliper on a Solara

• Pulling to one side under braking. One caliper is applying harder or releasing slower than the other.
• Uneven pad wear. The inner pad worn to the backing plate while the outer pad still has life (or the reverse), or pads worn into a taper. Bendix and Brake & Front End both point to uneven inner-to-outer wear as the classic caliper warning sign.
• A hot wheel and a burning smell. After a normal drive, one wheel is far hotter than the other side, and you may smell pad material. That is a caliper that is not releasing.
• Brake drag. The car coasts poorly, fuel economy drops, or the car pulls slightly even when you are not braking.
• Fluid on the inside of the wheel or tire. A leaking piston seal. This one is urgent, because you are losing hydraulic pressure.
• Soft or low pedal. Can come from a leaking caliper, air in the system, or a master cylinder problem, so rule the others out too.

What Causes Solara Calipers to Fail

Binding slide pins and brackets

This is the most common cause on cars this age. Brake dust and moisture get past the rubber boots, the grease hardens, and the pins corrode. Brake & Front End lists bent or binding mounting pins, worn slides, damaged brackets, swollen or hardened guide seals, and lack of lubrication as the usual culprits behind uneven wear on sliding calipers. A pin that will not move, moves in jerks, or springs back after you push it in needs service.

Corroded pistons and hardened seals

The rubber piston seal and dust boot harden and crack with heat and age. Once the boot splits, water reaches the piston and the bore, rust forms, and the piston sticks or the seal leaks. Bendix notes that a piston showing corrosion should be replaced, not cleaned and reused.

Old, wet brake fluid

Brake fluid absorbs moisture over time, and that moisture is what corrodes the inside of the caliper. A Solara that has never had a fluid flush is a prime candidate for sticking pistons. Use the fluid type marked on the master cylinder reservoir cap and follow the replacement interval in your owner's manual.

Deteriorated brake hose

A rubber hose can break down inside and act like a one-way valve, holding pressure on the caliper after you release the pedal. The symptom looks exactly like a stuck caliper. If a new caliper does not cure the drag, check the hose on that corner, or replace it along with the caliper on a car this old. See our brake hoses.

How to Diagnose It

1. Drive a few miles with light braking, then carefully compare wheel temperatures side to side (an infrared thermometer is ideal; do not touch the rotor).
2. Jack up the car, support it on stands, and spin each wheel by hand. A wheel that drags noticeably more than its partner points to that corner.
3. Remove the wheel and inspect the pads. Compare inner and outer thickness and look for tapered wear.
4. Pull the caliper off its bracket and check the slide pins. They should slide smoothly by hand with no jerking or spring-back.
5. Look at the piston dust boot for tears and at the caliper for wetness or fluid residue.
6. If pins and piston look good but the drag remains, suspect the hose.

The Fix: Caliper Replacement and What to Replace With It

If the slide pins are the only problem and the boots are intact, cleaning the pins and bracket and re-greasing them with high-temperature caliper grease may be enough. If the piston is stuck, the seal is leaking, or the boot is torn, replace the caliper. A remanufactured unit is the normal choice on a Solara and is far quicker than rebuilding your old one.

Replace calipers in pairs across an axle when one has failed from age, since the other has seen the same heat, moisture and miles. At the same time:

• Pads on both sides of the axle. Pads contaminated by fluid, or worn unevenly by a sticking caliper, go in the trash. Browse brake pads or ceramic brake pads.
• Rotors if they are overheated, scored or below minimum thickness. A caliper that has been dragging often leaves a blue, glazed or uneven rotor. See brake rotors.
• New mounting hardware and fresh caliper grease. Brake & Front End recommends replacing all mounting hardware along with the caliper. Our brake hardware kits cover clips and pins.
• A fluid flush. You have to bleed the system after a caliper swap anyway; flush all the old fluid while you are at it.

If you are doing pads and rotors on both axles at once, our 1999-2003 Toyota Solara front and rear brake kit bundles them. Replacement units are in our brake calipers collection, including remanufactured options from Cardone.

How Hard Is the Job?

A front caliper swap on a Solara is a reasonable driveway job for someone who has done pads before. You remove the wheel, disconnect the brake hose at the caliper, unbolt the caliper and bracket, fit the new caliper with fresh pads and hardware, and then bleed that corner until the fluid runs clean with no bubbles. Torque the caliper and bracket bolts and the hose fitting to the values in the factory service manual, and use new sealing washers where the hose bolts to the caliper.

The rear, on disc-brake cars, takes more patience because of the parking brake and because some rear piston designs must be turned rather than pushed back. Check how your old caliper retracts before you force it. If you are not comfortable bleeding brakes, hand this job to a shop: an air bubble left in the line gives you a soft pedal.

After the job, pump the pedal until it is firm before moving the car, then bed in the new pads with a series of moderate stops.

Frequently Asked Questions

Does my Solara have rear disc brakes or drums?

It depends on the car. Toyota catalogs rear disc calipers for 1999-2003 Solaras, and aftermarket catalogs also list rear drums and shoes for some 2002-2003 cars. Pull a rear wheel and look, or order by VIN.

Are Solara calipers the same as Camry calipers?

The first-generation Solara shares its platform with the Camry of the same years, and many brake parts cross over; rear pad sets for the Solara are also cataloged for the Camry and related Lexus models. Still, confirm by part number or VIN rather than assuming a Camry part fits.

Can I replace just one caliper?

You can, and on a newer car with one failed unit it is common. On a Solara that is over twenty years old, replacing both calipers on the axle keeps braking balanced and saves doing the other side a few months later.

Are there any brake recalls on the 1999-2003 Solara?

NHTSA's recall database shows no brake recalls for the 1999-2003 Camry Solara. The campaigns listed cover exterior lighting and, for 2000, rear suspension. Check your own VIN with Toyota or NHTSA to be sure.

Do I have to bleed the brakes after replacing a caliper?

Yes. Opening the hydraulic line lets air in. Bleed at least the corner you worked on, and ideally flush the whole system with fresh fluid of the type marked on the reservoir cap.

Why does my new caliper still drag?

Check the slide pins and bracket for binding, confirm the pads move freely in their clips, and inspect the rubber brake hose. A hose that has broken down inside can hold pressure on a brand-new caliper.

Sources

1. Toyota Solara OEM brake caliper catalog - front and rear caliper part numbers, supersessions and engine fitment for 1999-2003
2. NHTSA recalls database, 2000 Camry Solara - no brake recalls; campaigns cover lighting and rear suspension
3. KFE Brake Systems - 1999 Solara SE rear disc - rear disc brakes on the Solara and rear pads shared with Camry and related models
4. Detroit Axle - 2002 Solara rear disc kit - rear disc rotor and pad fitment for the 2002 Solara
5. Brake & Front End - slider caliper tech tip - causes of binding sliding calipers, replacing hardware, high-temperature lubricant
6. Bendix - Caliper servicing - slide pin corrosion, seal hardening, replacing corroded pistons, uneven wear symptoms