TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions
full bulletin at NHTSA ↗2008 Toyota Sienna brakes problems
severe 22 complaints filed with NHTSA · avg repair $450 · see brakes across all vehicles →
Failure mileage
Complaints
22
Recalls
0
Avg fix
$450
4crashes
When does it fail?
Of the 22 brakes complaints filed for the 2008 Toyota Sienna, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Among the 11 model years of Toyota Sienna in our records for brakes problems, this one ranks #3 by owner-complaint volume.
No new NHTSA brakes complaint has been filed on this vehicle in over 15 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering brakes on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
full bulletin at NHTSA ↗TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
full bulletin at NHTSA ↗TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
full bulletin at NHTSA ↗A key part to maintain the proper function and safe operation of the vehicle's braking system is to perform a visual inspection when installing brake pads, calipers, and discs. The following recommendations are intended to provide general tips for the inspection and/or installation of Toyota Complete Maintenance Care (TCMC) front brake pads and discs. Always refer to the model specific Repair manual and TIS publications for specific repair instructions.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2008-2009 Siennas describe seven distinct brake problems. Most concerning are sudden acceleration events triggered by brake application at low speeds—the engine revs hard while the brake pedal is pressed, and the transmission downshifts into full throttle for 1-2 seconds before brakes engage again. This happens repeatedly with no floor mat present, yet dealers have refused to document it.
Complete brake failure is also reported: brake pedal pressed to the floor with zero response; vehicle continues forward until owner shifts to Neutral, Park, or engages the emergency brake. These failures occur at various speeds and happen multiple times per owner.
Premature brake wear is widespread. Pads are down to 1-2mm inside and bald outside by 15,000 miles despite regular maintenance. Rotors rust heavily by 20,000 miles and become too thin to machine. Several owners needed full brake replacements by 33,000 miles. ABS and VSC warning lights illuminate with brake system failures; one dealer identified a faulty ABS actuator. Brake pedal softness and loss of pressure also appears, with some pedals fading completely to the floor while the vehicle sits stationary. One rear caliper piston seized from rust, and the dealer denied warranty coverage.
Same Toyota Sienna brakes reports on nearby years: 2005 · 2006 · 2007 · 2011
Failure modes owners describe
Sudden unintended acceleration during braking
Brake pedal application triggers engine rev-up and full acceleration instead of deceleration. Occurs without warning when pressing brake to stop at lights or parking. Transmission downshifts and applies full throttle. Effects described as 1-2 second bursts of acceleration before brakes take hold again.
When: At low speeds (30-40 mph) during normal braking situations; no clear mileage pattern across reports
Symptoms owners cite: Engine revs to 6000 RPM when brake pedal pressed; Van accelerates forward despite brake application; Transmission downshifts into full acceleration mode; Smooth acceleration feel for 1-2 seconds before brakes engage; Brake becomes functional again after acceleration stops; Occurs with no warning; driver must release brake and reapply
Repairs/costs cited: No repairs documented in narratives. One dealer told owner this cannot happen and refused to document issue. Toyota told one owner this is normal transmission behavior.
Brake pedal fades or loses pressure
Brake pedal becomes soft and progressively worsens over time, fading completely to the floor. Pedal does not hold pressure permanently, making vehicle difficult to slow. Condition exists whether vehicle is running or stationary.
When: Starting at low mileage (8,000 miles reported); worsening progressively over time
Symptoms owners cite: Brake pedal fades progressively to the floor; Pedal does not hold pressure permanently; Soft brake feel with poor response; Difficulty slowing vehicle; Condition present whether vehicle running or stationary
Repairs/costs cited: Dealer replaced rear brake pads and examined vehicle; stated condition was acceptable. One owner reported Toyota flushed brake lines 4 times, replaced master cylinder; charged $600 but stated they had no idea what caused the problem.
Complete brake failure
Brakes fail entirely with no response to pedal application. Vehicle continues moving despite full brake pedal pressure. Owner must shift to Neutral, apply emergency brake, or shift to Park to stop vehicle. Brake function returns after stopping.
When: Occurring at various mileages and speeds (10 mph to 55 mph); at 4 miles, 18,817 miles, 35 mph situations
Symptoms owners cite: Brake pedal pressed fully with no vehicle response; Vehicle continues forward despite maximum pedal pressure; No braking effect; vehicle inches forward or maintains speed; Brake function returns after emergency measures or shifting to Park; Multiple occurrences reported (4 times, 5-8 times, 4 separate occasions)
Repairs/costs cited: No successful repairs documented. Owner at 35 mph incidents had master cylinder replaced, brake lines flushed 4 times at $600; dealer stated van unsafe to drive with no resolution. One collision resulted when brakes failed during emergency stop.
Excessive brake wear at low mileage
Front and rear brake pads and rotors wear rapidly and prematurely, requiring replacement at very low mileage despite regular maintenance. Rotors thin and poor quality, rust develops on rotors making them non-serviceable.
When: 5,000-33,000 miles; some wear visible by 5,000 miles
Symptoms owners cite: Brake pads worn to 1-2mm inside at 15,000 miles; Rotors bald on outside edges at 15,000 miles; Heavy rust on rotors at 20,000 miles; Rotors too thin and poor metal quality to machine; Brake noise from front brakes; Repeated brake pad and rotor replacement needed before 35,000 miles
Repairs/costs cited: Rotors replaced at 15,000 miles. At 33,000 miles front tires and brakes required replacement again. At 20,000 miles rotors and pads all 4 wheels replaced due to rust and wear.
Rear caliper piston seized with rust
Rear disc brake caliper piston corrodes and becomes stuck in extended position, holding brake pad in continuous contact with rotor. Causes brake drag and eventual rear brake failure.
When: At 33,000 miles; occurred one month after 30,000 mile service
Symptoms owners cite: Rear brakes fail to function properly; Caliper piston stuck in extended position; Rust on caliper clip; Brake pad held continuously against rotor; Brake drag condition
Repairs/costs cited: Caliper piston issue identified by dealer. Repair performed at customer expense.
Recalls/TSBs owners mention: Dealer denied warranty coverage stating failure was caused by rust.
Loss of brake control in wet conditions
Brakes lose control and vehicle skids when applied in heavy rain at highway speeds, resulting in crash and vehicle destruction. No clear cause documented.
When: At approximately 50,000 miles; during heavy rain at 45 mph
Symptoms owners cite: Brake application in heavy rain at 45 mph causes loss of vehicle control; Vehicle skids and crashes; Complete vehicle destruction
Brake system warning lights with ABS/VSC malfunction
ABS, traction control, and VSC warning lights illuminate. Vehicle may automatically engage ABS braking or brakes lock up without driver input. Can occur on dry roads at highway speeds. Involves ABS actuator malfunction.
When: At various mileages; one incident June 2015 on city streets; one on highway in dry clear conditions
Symptoms owners cite: ABS warning light illuminates; Traction control light illuminates; VSC warning light illuminates and beeps; Vehicle sometimes applies brakes automatically; Engine seems to lug during warning events; Brake pedal goes to floor; Brakes lock and won't respond; Events become more frequent over years
Repairs/costs cited: ABS brake actuator replaced in June 2015.
Synthesized from 22 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Tl*the contact owns a 2008 Toyota sienna. While driving approximately 45 MPH in heavy rain, the contact applied the brakes and the vehicle lost control which resulted in a crash. There were no injuries. A police report was filed. The vehicle was destroyed. The failure had not been diagnosed. The current and failure mileages were approximately 50,000.
Had brakes trouble with your 2008 Toyota Sienna?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the brakes problem on the 2008 Toyota Sienna?
It's a meaningful issue. 22 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $450.
At what mileage does the brakes typically fail?
Across the 15 complaints that reported odometer mileage, most brakes failures cluster between 29,000 and 95,474 miles, with the median around 35,000. A quarter of owners report trouble before 29,000; a quarter make it past 95,474. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $450 for brakes repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to brakes?
No active recalls currently cover brakes issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2008/Toyota/Sienna.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.