Some Model Y vehicles were built without a hydraulic control unit (HCU) wake-up wire, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle.
full bulletin at NHTSA ↗2020 Tesla Model Y brakes problems
severe 18 complaints filed with NHTSA · avg repair $450 · see brakes across all vehicles →
Complaints
18
Recalls
0
Avg fix
$450
1crash
4injuries
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.
On some Model 3 and Model Y vehicles, the brake caliper bolts may not have been torqued to internal specifications.
full bulletin at NHTSA ↗On some Model 3 and Model Y vehicles, the brake caliper bolts may not have been torqued to internal specifications.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The dominant complaint across these 18 reports is phantom braking: the vehicle applies the brakes hard without warning or visible reason while running adaptive cruise control, autopilot, or Full Self Driving mode. Owners logged 6 to 15+ occurrences per trip, sometimes within a few miles of each other. These events occur on clear highways with no traffic, at intersections, under overpasses, and on lane-line transitions. The car loses 5–10 mph abruptly or slows from 70 mph to 50 mph, creating rear-end collision risk. Tesla service acknowledged the issue but told owners no fix exists yet and updates may help later.
Owners also report unintended acceleration in three separate incidents—one vehicle rolling backward out of a parking space, another accelerating hard on light pedal touch, and a third jumping from 0 to 60 mph while parking, with no warning lights lit before any event. One owner describes the automatic emergency braking system engaging while safely passing a truck, nearly pushing him into the truck's path when a tailgating vehicle was present.
Additional brake-system issues include a leaking rear brake hose, a bent and missing brake caliper bolt, and multiple traction-control and ABS error codes that Tesla claims are defects but requires the owner to pay to fix. One owner experienced hydroplaning in heavy rain and believes regenerative braking made the skid worse. No owner received a recall notice, and Tesla's responses—when provided—have been noncommittal or absent.
Failure modes owners describe
Phantom Braking
Vehicle applies brakes unexpectedly and with no visible obstacle or reason while operating adaptive cruise control, autopilot, or Full Self Driving mode. Owners report sudden hard braking, loss of speed (5–10 mph drops or more abrupt slowdowns), and repeated instances during single trips (up to 15+ occurrences over 1400 miles reported). The braking often occurs at intersections, under overpasses, or on clear highway stretches with no traffic.
When: Multiple occasions; 3,000 miles and higher; throughout vehicle operation
Symptoms owners cite: Sudden hard braking with no visible reason; Vehicle loses 5–10 mph or decelerates abruptly to 50 mph from 70 mph; Occurs while on adaptive cruise control, autopilot, or FSD; Happens at intersections, lane line transitions, overpasses, or clear highway sections; Multiple instances per trip (6, 15+ reported over long distances); Difficult to implement corrective action; risk of rear-end collision; Autopilot disengages after braking event
Repairs/costs cited: Tesla service stated no fix available at this time; advised future software updates may resolve; owners report contradictory information from Tesla
Recalls/TSBs owners mention: Tesla acknowledged issue would be corrected via software updates; no recall or formal TSB mentioned
Unintended Acceleration
Vehicle accelerates abruptly or without driver input, resulting in multiple crashes. First incident involved rolling backward out of parking space into concrete wall. Second incident involved slight accelerator pedal depression causing abrupt acceleration and collision with another vehicle. Third incident involved vehicle accelerating from 0 to 60 mph while pulling into parking space, resulting in collision with brick wall and vehicle totaling.
When: 7,000 miles; October 17, 2021; January 9, 2022
Symptoms owners cite: Vehicle rolled backward out of parking space without driver input; Abrupt acceleration on slight pedal depression; Unintended acceleration from 0 to 60 mph in parking lot scenario; No warning lights illuminated; Airbags deployed in third incident
Repairs/costs cited: First incident not diagnosed or repaired by dealer; second incident repaired at World Collision at The Mall of Georgia; third incident resulted in vehicle totaling
Recalls/TSBs owners mention: Manufacturer made aware but offered no assistance
Automatic Emergency Braking Malfunction
Vehicle's automatic emergency braking system engages unexpectedly while vehicle is safely passing another vehicle on a multi-lane highway, creating dangerous collision risk. The system appears to lack tailgating detection logic; when a vehicle is tailgating closely, the system still engages braking, potentially pushing the passing vehicle into adjacent traffic.
When: May 7, 2021; clear day conditions
Symptoms owners cite: Automatic braking engaged suddenly while vehicle was safely passing a semi-truck; No obstacle present to warrant braking; System did not account for tailgating vehicle behind owner's car; Owner shaken but no crash occurred; tailgating vehicle swerved to shoulder to avoid collision
Recalls/TSBs owners mention: Owner disabled automatic braking feature via salesman guidance; Tesla Company received two messages via app but did not respond
Brake Hose Leakage and Damage
Rear brake hoses showing leakage and wear damage. Owner reports discovering rear driver side brake hose leaking and rear passenger side brake hose showing similar damage. Cause attributed to either original factory build quality or improper brake reassembly during prior service work (half-shaft lubrication service required brake disassembly).
When: Routine wheel rotation and alignment service; vehicle mileage not specified
Symptoms owners cite: Rear driver side brake hose leaking; Rear passenger side brake hose showing wear and damage
Repairs/costs cited: Replacement parts backordered at local garage; vehicle towed to Tesla repair center for replacement
Brake Caliper Bolt Missing and Caliper Damage
Brake caliper nut bolt is missing from vehicle and brake caliper is bent. Missing fastener and deformed caliper create potential safety hazard. Owner advised by independent service mechanic to cease driving pending replacement.
When: September 2022; screeching sound noticed during brake application
Symptoms owners cite: Screeching sound from rear of vehicle during braking; Missing brake caliper nut bolt; Brake caliper bent and deformed; Caliper capable of contacting wheel per cited CNET article
Repairs/costs cited: Independent brake/tire shop installed similar aftermarket bolt; owner to have original Tesla bolt installed at Tesla repair center. Component not available for inspection as it is missing.
Recalls/TSBs owners mention: Manufacturer had not inspected vehicle at time of complaint; no warning issued
Regenerative Braking During Hydroplane Event
During moderate to heavy rain on interstate, vehicle hydroplaned and spun twice (two full 360-degree rotations). Owner believes regenerative braking system engaged when throttle was released and worsened hydroplane situation rather than recovering traction.
When: September 15, 2022; I-40 East, Bermuda Run, NC; moderate to heavy rain
Symptoms owners cite: Vehicle hydroplaned during rain; Two full 360-degree spins; Regenerative braking engaged when accelerator released; Regenerative braking reportedly worsened hydroplane condition
Traction Control and ABS Error Messages
Vehicle displaying multiple warning messages related to braking and traction systems: traction control errors, reduced traction warnings, disabled automatic emergency braking, and ABS disabled alerts. Manufacturer treating as defect but requiring owner to pay for repairs.
When: Not specified
Symptoms owners cite: Traction control error message; Reduced traction warning; Automatic emergency braking disabled message; ABS disabled message
Codes mentioned: Traction control disabled, Reduced traction control, Automatic emergency braking unavailable, ABS disabled
Repairs/costs cited: Tesla requiring owner to pay for repairs despite treating as manufacturer defect
Synthesized from 18 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Had brakes trouble with your 2020 Tesla Model Y?
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 2020 Tesla Model Y?
It's a meaningful issue. 18 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $450.
At what mileage does the brakes typically fail?
Based on the 18 complaints filed, brakes issues most often appear around 5,000 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
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/2020/Tesla/Model Y.
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.