Owners of 2006 Lincoln Zephyrs consistently describe a single critical problem: when the ABS engages—typically during braking in snow—the brake pedal sinks to the floor or near it, and braking power nearly disappears until the ABS cycle completes. This has happened at mileages ranging from 51,000 to 93,000 miles. One owner experienced the failure twice. Ford and Lincoln issued NHTSA Recall 19V904000 in response, identifying a faulty master cylinder valve as the culprit and calling for a pressure flush of the brake system with DOT 4 fluid.
However, the recall has stalled. As of early 2021, parts remain unavailable—dealers told owners they could expect the fix by late 2020 or end of first quarter 2020, but orders remain unfilled months later. Some dealerships refuse to perform the recall altogether, citing corrosion, while others demand owners pay out-of-pocket to repair other brake components first. In one documented case, a dealer attempted the recall service but performed it incorrectly: the brake fluid came back rust-colored with black particles, overfilled and never properly flushed.
One owner reported Ford acknowledged 15 crashes tied to this issue but claimed the vehicle remains safe to drive until parts arrive. Several owners say they cannot safely operate their vehicles and want recalls completed or rental cars provided during the wait.
Failure modes owners describe
ABS activation causing brake pedal to floor
When ABS engages during braking (especially in snow/winter conditions), the brake pedal sinks to or near the floor and braking response becomes severely diminished. After ABS cycles, pedal travel returns to normal over several days.
When: 51,318 miles and 62,700 miles reported in one case; 93,000 miles in another; occurs during snow/winter braking events
Symptoms owners cite: Brake pedal sinks to floor when ABS activates; Severe loss of braking power during ABS engagement; Slow brake response in snow at 20 mph; Pedal travel takes several days to return to normal after incident; ABS seems to take control but braking remains poor
Repairs/costs cited: One owner cited $1000+ to fix anti-lock brake pump failure
Recalls/TSBs owners mention: NHTSA Campaign 19V904000 / Ford Recall 19S54 / 19S54 (Service Brakes, Hydraulic; Master Cylinder Valve) - calls for pressure flush with DOT 4 brake fluid. Parts unavailable as of early 2021; owners reported extended delays (recall issued January 2020, still waiting into 2021). One dealer attempted recall but used wrong service procedure (overfilled, rust-colored fluid with black particles instead of pressure flush). Some dealers refused to perform recall work citing corrosion or demanded owners repair other issues (brake caliper replacement) first.
Ice/snow accumulation behind front wheel causing brake feel loss
Heavy accumulation of ice or snow packed behind the right front wheel can restrict brake pedal travel and trigger ABS response, mimicking a brake system failure. Problem resolves once ice/snow thaws.
When: Occurs when driving with snow/ice accumulation on vehicle
Symptoms owners cite: Brake pedal nearly goes to floor; ABS activates; Heavy ice/snow accumulation visible behind right front wheel
Repairs/costs cited: Mechanic inspection revealed ice/snow; no parts replacement needed
Brake fluid contamination and improper recall service
Brake fluid in the system appears rust-colored with black particles suspended in it, indicating contamination and corrosion inside hydraulic lines. Dealer service on recall procedure left fluid contaminated rather than performing proper pressure flush.
When: Discovered during attempted recall service on vehicle with unknown mileage history
Symptoms owners cite: Rust-colored brake fluid; Black particles suspended in brake fluid; Reservoir overfilled during recall service
Repairs/costs cited: Recall service at Bob Thomas Lincoln (Fort Wayne, IN) completed pressure flush incorrectly; fluid remained contaminated and overfilled
Recalls/TSBs owners mention: NHTSA Campaign 19V904000 calls for pressure flush with DOT 4 brake fluid, but dealer did not complete service correctly
Synthesized from 11 NHTSA owner complaints — unverified consumer
allegations, summarized for patterns. The verbatim filings appear below.