2024 CADILLAC LYRIQ — Complaint #2173755
Open-data reference.
NHTSA Complaint about FORWARD COLLISION AVOIDANCE: WARNINGS filed February 5, 2026
NHTSA complaint #2173755 (ODI reference 11715908) concerns a 2024 CADILLAC LYRIQ and was filed on February 5, 2026. The owner reports the failure occurred on November 26, 2025. The report was geocoded to California based on the filer's self-reported location. The affected component is categorized as forward collision avoidance: warnings, one of NHTSA's standardized taxonomy codes used to group defect patterns across make, model, and year.
The filer flagged the following severity indicators: crash: yes, fire: no, injuries: 0, fatalities: 0. A complaint that flags a crash, fire, or fatality is escalated on NHTSA's internal review queue and factors more heavily into any Preliminary Evaluation decision on this make and model. Because a VIN was supplied, this complaint is tied to a specific vehicle and not just a model-year cohort.
Individual complaints are consumer-submitted and unverified by NHTSA engineers — the agency's role at this stage is to collect, index, and make them searchable. What matters for federal action is the pattern: when many owners of the same CADILLAC LYRIQ cohort independently describe similar forward collision avoidance: warnings failures, defect investigators have grounds to open a PE and request manufacturer data. Related filings for the same vehicle and component appear below, and the detail page for the full 2024 CADILLAC LYRIQ shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
On November 26, 2025, while traveling in stop-and-go freeway traffic, I experienced a severe braking failure that led to a rear-end collision. Despite applying maximum force to the brake pedal, the vehicle did not decelerate as expected. Objective technical evidence from the Bosch CDR report (Case #1105768) confirms a critical system failure: Extreme Driver Input: At -0.5 seconds before impact, Driver Applied Brake Pedal Pressure reached 10,935 kPa, representing a near-maximum emergency braking effort. Inadequate Response: Despite this peak pressure, the Vehicle Indicated Speed decreased only from 24 MPH to 22 MPH in the final 0.5-second interval. Data Discrepancy: The vehicle decelerated by 12 MPH (from 36 to 24 MPH) between -1.0s and -0.5s under lower pressure (7,695 kPa). However, when brake pressure was increased to its peak at -0.5s, deceleration effectively stalled. Electronic Anomaly: The Traction Control System (TCS) was reported as "Active" throughout the braking event, in
Complaint Details
| NHTSA Complaint ID | 2173755 |
| ODI Number | 11715908 |
| Date Filed | February 5, 2026 |
| Failure Date | November 26, 2025 |
| VIN | 1GYKPPRK7RZ |
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Source: NHTSA Vehicle Complaints Database. Component taxonomy and severity codes are standardized by NHTSA Office of Defects Investigation.
Read our methodology — how this data is sourced, computed, and verified.