By Core Brake Parts Tech Team — Circleville, OH warehouse
The Saab 9-2X has four-wheel disc brakes, but its parking brake does not use the rear pads at all. Like the Subaru Impreza it was built from, each rear rotor has a small drum machined into its center hat, and a pair of cable-operated shoes inside that drum holds the car when you pull the lever. Most 9-2X parking brake complaints - a lever that pulls too high, a car that rolls on a hill, or a rear wheel that drags - come down to those shoes being out of adjustment, worn, glazed or tied to a rusty cable.
How the 9-2X Parking Brake Works
The 9-2X was sold for the 2005 and 2006 model years (many parts catalogs list it as 2004-2006) and was essentially a restyled Subaru Impreza, offered as the 2.5-liter Linear and the 2.0-liter turbo Aero, with all-wheel drive and antilock four-wheel disc brakes standard. Because it shares the Impreza platform, it also shares the Subaru rear brake layout: a hydraulic caliper squeezes the rear rotor for normal stops, and a separate mechanical system handles parking.
That separate system is often called a drum-in-hat design. Here is the chain of parts from your hand to the wheel:
- Hand lever between the front seats, with a ratchet and release button.
- Cable adjuster at the base of the lever, under the center console: a threaded rod with a lock nut and an adjusting nut.
- Two rear cables running under the car to each rear backing plate.
- Parking brake shoes inside each rear rotor hat, with springs, hold-down hardware and a star-wheel style adjuster.
Pulling the lever pulls the cables, which spread the shoes against the inner drum surface of the rotor hat. The rear pads and calipers play no part in it. That is why a fresh set of rear pads never fixes a weak parking brake on this car, and why the rotor hat surface matters as much as the friction face when you replace rear rotors.
For reference, the federal standard for light-vehicle brakes (FMVSS 135) requires a parking brake to hold the vehicle stationary for 5 minutes, facing both uphill and downhill, on a 20 percent grade, with no more than 400 N (89.9 lb) of force on a hand lever. A healthy 9-2X parking brake should hold on any hill you normally park on.
Common 9-2X Parking Brake Problems and Symptoms
| Symptom | Most likely cause | What to check first |
|---|---|---|
| Lever pulls up many clicks before it holds | Shoes backed off or worn; cable stretched | Shoe adjuster through the rotor hat, then the cable nut |
| Car creeps or rolls on a hill with the lever up | Shoes too far from the drum, glazed or oil-soaked linings, seized cable | Shoe lining condition and drum surface in the rotor hat |
| Lever is hard to pull or will not return fully | Rusted or kinked cable, seized shoe hardware | Cables at the rear backing plates for rust and free movement |
| Rear wheel hot, dragging or squealing after a drive | Shoes adjusted too tight, broken return spring, cable not releasing | Spin the wheel by hand with the lever down |
| Brake warning light stays on with lever down | Lever switch out of position or low brake fluid | Brake fluid level first, then the lever switch |
| Grinding or rattle from the rear at low speed | Broken shoe spring or loose hardware inside the hat | Remove the rotor and inspect the shoe assembly |
The Subaru owner's manual that covers this platform tells drivers to hold the brake pedal down firmly while pulling the lever fully up, and to confirm the brake warning light goes out after release. It also warns that driving with the parking brake applied causes unnecessary wear on the brake linings. That last point is a common cause of glazed shoes on these cars: one trip with the lever partly up can overheat the small shoes and leave them hard and shiny, and they will not hold well afterward.
Check your brake fluid level whenever the red brake light stays on. The same light warns of low fluid, and low fluid usually means worn pads or a leak rather than a parking brake fault.
What Causes a Weak or Dragging Parking Brake
The shoes are set by hand. On a drum-in-hat system the shoes are only used for parking, so they wear very slowly and the clearance is set with the adjuster. After rear rotor replacement, or on a car where the adjuster has been disturbed, the clearance is often too large, and the lever travels a long way before the shoes touch.
Road salt and cable corrosion. The 9-2X lived in the same salt-belt conditions that led to a corrosion recall on its front lower control arms (NHTSA campaign 11V464000). The rear parking brake cables and the shoe hardware see the same spray. A cable that is rusty inside its sheath will pull hard, release slowly, or stick applied.
Rotor hat surface. The shoes ride on the inside of the rotor hat, not the face a brake lathe normally cuts. Rust, a lip or scoring there reduces holding power. New rear rotors give the shoes a clean surface, but the shoes must be readjusted to it.
Contamination. A leaking rear axle seal or brake fluid from a caliper can soak the shoe linings. Oil-soaked shoes do not recover and must be replaced, and the leak fixed first.
There are no brake-system recalls for the 9-2X in NHTSA's recall database; its listed recalls cover the passenger airbag inflator and the front lower control arms. Parking brake problems on this car are wear and maintenance items, not a known defect.
How to Adjust the 9-2X Parking Brake
The correct order is shoes first, cable second. Tightening only the cable nut on a car with backed-off shoes pulls the shoes unevenly and can leave one side dragging.
- Release the lever and raise the rear of the car safely onto jack stands. Remove the rear wheels.
- Find the adjuster access hole. Each rear rotor hat has a small rubber plug. Rotate the rotor until the hole lines up with the star-wheel adjuster behind it.
- Expand the shoes. With a flat-blade screwdriver or brake adjusting tool, turn the adjuster to spread the shoes until the rotor can no longer be turned by hand.
- Back it off. Turn the adjuster back the number of notches listed in the factory service manual so the rotor turns freely with no shoe drag. Spin it and listen for rubbing.
- Repeat on the other side, then refit the rubber plugs so water and salt stay out of the drum.
- Check the lever travel. Count the clicks as you pull the lever. A common DIY target for Subaru drum-in-hat systems is about 7 to 8 clicks to full engagement; the factory manual lists the exact range for the 9-2X.
- Adjust the cable only if needed. The cable adjuster sits at the base of the lever under the center console. Hold the lock nut and turn the adjusting nut to shorten or lengthen the cable, then lock it.
- Verify. With the lever fully down, both rear wheels must spin freely. With the lever up, the car should hold on a slope.
Budget about an hour and a half for a full shoe and cable adjustment; a cable-only tweak at the lever takes a few minutes once the console trim is off.
Parts to Replace and What to Do at the Same Time
If adjustment does not restore holding power, pull the rear rotors and inspect the shoes and hardware. Replace the shoes if the linings are thin, glazed, cracked or oily, and replace the springs and hold-down hardware with them; tired springs are what let shoes rattle and drag. Hardware kits are in our brake hardware kits section, and replacement shoes are in brake shoes.
Because the rotor hat is the parking brake drum, the best time to service the shoes is when you replace the rear rotors. For the 2.0-liter turbo Aero, we carry EBC USR slotted rear rotors for the 9-2X 2.0 turbo, which pair with EBC Yellowstuff rear pads for the 9-2X turbo. For the 2006 2.5i Linear there is the Hawk HPS 5.0 rear pad set, and for 2005 cars a Hawk Talon drilled and slotted rear rotor set. Always match rear parts to your engine, since the Linear and Aero use different brake hardware.
While the rotors are off, also do these:
- Clean the backing plate and lightly lubricate the shoe contact points with brake grease, never on the lining.
- Work each rear cable by hand at the backing plate. If it is stiff or does not spring back, replace it now rather than chasing a dragging shoe later.
- Check the rear caliper slides and pads. Browse our brake rotors and brake pads if they are due.
- Readjust the shoes to the new rotor hats before the wheels go back on.
How Hard Is This Job?
A shoe adjustment through the rotor hat is an easy driveway job with basic hand tools, jack stands and a flat screwdriver. Replacing the shoes is moderate: the rear caliper and rotor come off, and the springs and hold-down pins take patience and a pair of brake spring pliers or a hold-down tool. The most common mistakes are reinstalling springs in the wrong holes and skipping the final adjustment, which leaves a lever that pulls to the top. Take a photo of each side before you disassemble it and do one side at a time so the other side is a reference.
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Shop Brake Pads & Kits →Frequently Asked Questions
Does the Saab 9-2X use the rear brake pads for the parking brake?
No. The 9-2X uses a separate set of small shoes inside a drum built into the center hat of each rear rotor. The rear pads and calipers only work when you press the brake pedal.
How many clicks should the 9-2X parking brake lever take?
A common target for Subaru drum-in-hat parking brakes is about 7 to 8 clicks to full engagement. If yours takes many more, adjust the shoes through the rotor hat before touching the cable.
Why does my parking brake not hold after I replaced the rear rotors?
New rotor hats change the shoe clearance. The shoes must be expanded to the new drum surface with the adjuster, then backed off slightly. Skipping that step is the most common cause of a weak parking brake after a rear brake job.
Are Saab 9-2X parking brake parts the same as Subaru Impreza parts?
The 9-2X is built on the Impreza platform, and many rear brake parts, including parking brake shoes and hardware, are shared with Impreza models of the same era. Confirm fitment by year and engine before ordering, since the turbo and non-turbo cars use different rear brakes.
Is there a recall on the 9-2X parking brake?
No. NHTSA lists recalls for the 9-2X passenger airbag inflator and the front lower control arms, but none for the brake system.
Can I drive with the parking brake dragging?
You should not. A dragging shoe overheats the rotor hat and glazes the linings, and it can leave the parking brake unable to hold. Fix the adjustment or the stuck cable before driving further.
Sources
- Consumer Guide - 2005 Saab 9-2X review flashback - Impreza-based, 2005-2006 model years, Linear and Aero trims, AWD, antilock four-wheel disc brakes
- Subaru Impreza Owner's Manual - Parking brake - how to apply and release, warning light check, lining wear from driving with the brake applied
- Blingstrom - Subaru parking brake adjustment (disc brakes) - adjuster behind the rotor hat plug, 7-8 click target, cable adjuster under the console, job time
- NHTSA recall database - 2005 Saab 9-2X - airbag inflator and front lower control arm corrosion recalls, no brake recalls
- 49 CFR 571.135 (FMVSS 135) - Light vehicle brake systems - parking brake must hold 5 minutes on a 20 percent grade in both directions, 400 N hand lever limit
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