Service Bulletin - The front and/or rear brakes make a high-pitched squeal when the brakes are lightly applied at 24 km/h (15 mph) or less, with ambient temperatures below 10°C (50°F).
full bulletin at NHTSA ↗2021 Acura RDX brakes problems
severe Owners of the 2021 Acura RDX have filed 10 NHTSA complaints about the brakes at roughly $450 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See brakes across all vehicles →
Complaints
10
Recalls
0
Avg fix
$450
| Model year | brakes complaints |
|---|---|
| 2017 RDX | 9 |
| 2018 RDX | 3 |
| 2019 RDX | 12 |
| 2020 RDX | 20 |
| 2021 RDX (this page) | 10 |
1crash
What stands out
Among the 7 model years of Acura RDX in our records for brakes problems, this one ranks #3 by owner-complaint volume.
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.
Service Bulletin - The front and/or rear brakes make a high-pitched squeal when the brakes are lightly applied at 24 km/h (15 mph) or less, with ambient temperatures below 10°C (50°F).
full bulletin at NHTSA ↗Service Bulletin - The front and/or rear brakes make a high-pitched squeal when the brakes are lightly applied at 24 km/h (15 mph) or less, with ambient temperatures below 10°C (50°F).
full bulletin at NHTSA ↗Service Bulletin - The front and/or rear brakes make a high-pitched squeal when the brakes are lightly applied at 15 mph or less, with ambient temperatures below 50° F.
full bulletin at NHTSA ↗Service Bulletin- The front and/or rear brakes make a high-pitched squeal when lightly applied at 15 mph or less. The front brakes stop squealing when they are warmed up.For the front brakes, the brake damping force of applied shims is insufficient at colder temperature. For the rear brakes, there is not enough dampening between the rear brake pads and shims.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners report multiple distinct brake failures on 2021 RDX models. The electronic parking brake has seized completely—rendering vehicles immobile with no manual override—due to gear motor and switch circuit malfunction. At least one vehicle required replacement of both components and still did not function normally afterward.
The automatic Brake Hold feature has timed out without warning while vehicles sat stopped in traffic, allowing forward roll that caused a rear-end collision into another vehicle. The owner's manual provides no detail on what happens or what warning appears when the feature times out.
Braking effectiveness problems range from brakes that slip and fail to apply promptly to a case where a vehicle lurched forward 10 feet while braking at a traffic light immediately after brake pad and rotor service. Another owner reports the vehicle does not slow adequately under hard braking.
Brake noise is widespread: rear brakes produce extraordinary high-pitched screeching, especially in reverse, sometimes requiring additional force to stop the vehicle. Separate complaints describe consistent loud rear brake squeaking starting within weeks of new-car purchase. Dealers acknowledge these problems are occurring across 2021 models but have no fix available. One brake judder complaint describes the sensation of premature failure at moderate and higher speeds, ongoing and worsening over a year.
Same Acura RDX brakes reports on nearby years: 2019 · 2020
Failure modes owners describe
Electronic parking brake seizure/failure to engage
Electronic parking brake gear unit motor and switch circuit malfunction causing brake seizure (unable to release) or loss of engagement function. Owners report no manual override available—vehicle becomes immobilized when rear brakes seize.
When: 63,270 miles (one case); early in ownership for others
Symptoms owners cite: Parking brake seized, would not release; Parking brake switch circuit out of spec; Loss of parking brake engagement after replacement
Repairs/costs cited: Dealer replaced gear unit motor and parking brake switch; issue recurred or remained unresolved
Brake Hold automatic feature timeout without warning
Automatic Brake Hold feature timed out while vehicle stopped at traffic light with no warning or indication, allowing vehicle to roll forward and strike vehicle ahead. Owner states manual provides no details on timeout warning or procedure.
When: Extended stop at traffic light
Symptoms owners cite: Brake Hold feature timed out without warning; Vehicle lurched forward while stopped; Rear-ended vehicle in front at traffic light; Multiple electronic features flashed after impact
Repairs/costs cited: Vehicle towed to dealer for evaluation
Recalls/TSBs owners mention: Honda assigned case number but no case manager assigned
Unintended forward movement while braking at rest
Vehicle moved forward 10 feet while stopped at red light with foot firmly on brake pedal immediately after front and rear brake pad and rotor replacement. Occurred with no warning lights. Dealer could not duplicate issue.
When: Immediately after brake service (pad and rotor replacement)
Symptoms owners cite: Unintended forward acceleration while stopped at traffic light; Vehicle moved forward 10 feet with foot on brake; Occurred right after brake pad and rotor service
Repairs/costs cited: Dealer service included front and rear brake pad and rotor replacement; unable to reproduce issue at dealer
Brake slip/poor brake response
Brakes do not apply promptly and slip under normal braking. Owner suspects caliper and rotor defect. Dealer stated no recall available to diagnose the issue.
Symptoms owners cite: Brakes slip and do not take promptly; Poor brake response under normal operation
Repairs/costs cited: Owner suspects calipers and rotors; no repair performed
Recalls/TSBs owners mention: Dealer confirmed no recall available
Brake judder at moderate and higher speeds
Front brakes (possibly rear) judder when applied at moderate and higher speeds, creating sensation of premature brake failure. Ongoing and worsening for past year. No warning lamps set; owner doubts sensors monitor the issue.
When: Consistent over past year, worsening
Symptoms owners cite: Front brake judder at moderate and higher speeds; Sensation of premature brake failure; Problem ongoing and worsening over time
Recalls/TSBs owners mention: Dealer denied any known issues
Rear brake noise and high-pitched screeching
Rear brakes and rotors produce odd noise or extraordinarily high-pitched screeching when brakes applied, especially in reverse. Occurs regardless of engine temperature. Owner must apply additional force to stop vehicle in reverse. Dealership aware of ongoing problem with 2021 model but has no fix.
When: Consistent; affects both cold and warm operation
Symptoms owners cite: High-pitched screeching noise from rear brakes; Unusual noise from rear rotors; Increased noise when braking in reverse; Requires additional force to stop in reverse
Recalls/TSBs owners mention: Dealership aware of problem, no fix available
Rear brake squeak
Rear brakes squeak loudly, starting within weeks of new vehicle purchase and continuing persistently. Occurs at low speeds and when coming to stop. Owner concerned squeaking indicates accelerated brake wear.
When: Began within weeks of purchase; ongoing
Symptoms owners cite: Loud rear brake squeaking at low speeds; Squeaking when vehicle comes to stop; Continuous squeaking, cold and warm
Recalls/TSBs owners mention: Acura contacted multiple times; no resolution provided
Brake squeeze/transmission push during hard braking
Vehicle does not slow down adequately under hard braking; owner perceives transmission is pushing car more than it should during braking events.
When: Occasional occurrences
Symptoms owners cite: Vehicle does not slow down under hard braking; Sensation that transmission pushes car during braking
Synthesized from 10 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
After dealer (worldwide motors Ltd also call (Paragon Acura) 33-40 57th street, Woodside, NY 11377)replaced front and rear brake pads and rotors, my vehicle experienced unintended acceleration while stopped. While idling at a red light with my foot firmly on the brake pedal, the vehicle suddenly moved forward approximately 10 feet on its own. This was a serious safety concern and nearly caused a…
I bought this car from a Honda dealership 1 month ago and my brakes are squeaking very loud when reversing my car. It happens every morning and is very frustrating. I would like this fixed for it being such an expensive car.
Had brakes trouble with your 2021 Acura RDX?
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 2021 Acura RDX?
It's a meaningful issue. 10 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $450.
At what mileage does the brakes typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
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/2021/Acura/RDX.
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.