Owners describe five distinct brake system failures in 2009 Elantras. One driver experienced sudden complete brake loss at 25 mph after a plastic protective cover over the brake line trapped moisture and salt, causing corrosion that ruptured the line—a $400 repair that could have been fatal on the highway.
More alarming are engine compartment fires: six owners report fires originating from the brake system area, sometimes while the vehicle sat parked. These incidents tie to NHTSA Campaign 20V061000 for hydraulic brake defects, with warning lights (ABS, brake, Check Engine) illuminating before flames appeared. One fire occurred at 17,000 miles; others at higher mileages. Hyundai parts for the recall remained unavailable for months (one owner waited three months with only 5 parts arriving for 20 waiting customers), leaving owners unable to complete repairs.
Winter braking presents another hazard: several owners report brakes locking up or becoming completely unresponsive in loose wet snow, causing dangerous sliding through intersections. One owner stopped the vehicle by rapid brake pedal stomping to clear snow from the pads. Dealership inspections found nothing wrong since test drives couldn't replicate snow conditions.
Two additional issues include abnormal steering wheel shaking during braking at lower mileages, and premature caliper corrosion and seizure (front at 105,717 miles, rear at 109,540 miles), even on vehicles that had received undercoating and rustproofing.
Failure modes owners describe
Brake line corrosion and rupture
Plastic protective cover traps moisture and salt, causing the brake line to rust through and leak brake fluid, resulting in complete brake failure.
When: 8 years/unknown mileage
Symptoms owners cite: Complete loss of brakes while driving; Brake fluid leakage
Repairs/costs cited: Plastic cover removed and brake line sealed; reported cost $400
Brake system fire—ABS/HECU short circuit
Engine compartment fires originating from the brake system, primarily linked to NHTSA Campaign 20V061000 for hydraulic service brakes. Multiple reports of fires occurring while vehicle parked or shortly after warning lights appear. Some vehicles destroyed. Likely related to ABS HECU (hydraulic electronic control unit) failure and wiring short circuits.
When: Various, one at 17,000 miles, others at 100,000+ miles
Symptoms owners cite: ABS warning light illumination; Brake warning light illumination; Smoke from engine compartment; Flames under hood; Check Engine light
Repairs/costs cited: Recall parts unavailable; dealerships reported long waits (3+ months documented) with limited parts allocation
Recalls/TSBs owners mention: NHTSA Campaign 20V061000 (Service Brakes, Hydraulic); parts unavailable for extended periods
Brake lock-up and loss of function in snow/wet conditions
Brakes lock up or become unresponsive when driving on loose wet snow or icy conditions. Snow buildup between brake pads and rotors prevents braking action. Condition clears when snow is plowed or compacted, or by rapid brake pedal stomping.
When: Winter driving conditions; one report at 37,000 miles
Symptoms owners cite: Brakes lock up in wet snow; Loss of brake response on snow/ice; Vehicle slides as if on ice; Snow accumulation between pads and rotors
Repairs/costs cited: Dealers unable to duplicate failure under controlled conditions; no repairs performed
Brake pedal pulsation and steering wheel shake during braking
Steering wheel shakes abnormally when brake pedal is depressed. Occurs only during braking, suggesting a brake system balance or rotor issue.
When: 23,000 miles and 37,000 miles reported
Symptoms owners cite: Steering wheel shaking while braking; Excessive shaking during braking in snow/ice
Repairs/costs cited: No repairs performed; dealers unable to duplicate
Premature brake component corrosion and seizure
Front and rear brake calipers seize prematurely due to rust. Seized calipers ruin rotors and cause skidding. Failure occurs despite recent brake pad replacement and prior application of undercoating and rustproofing.
When: 105,717 miles (front); 109,540 miles (rear)
Symptoms owners cite: Front brakes seize; Rear caliper seizure; Skidding to stop; Brake component rust
Repairs/costs cited: Calipers, rotors, and pads replaced; undercoating and rustproofing had been applied at 76,988 miles
Synthesized from 15 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.