Start with the records. Repair orders, warranty documents, mileage, and days out of service are more useful than general assumptions about whether a vehicle qualifies.
Safety features in modern cars rely on a web of sensors—radar units for blind-spot monitoring, cameras for lane keeping, wheel-speed sensors for ABS, and occupant sensors for airbags. When those sensors misread the road or fail altogether, everyday driving can become stressful or even dangerous. If your vehicle’s safety systems keep malfunctioning despite multiple visits to the dealer, California Lemon Law may offer protections worth exploring. The goal of this article is to explain how the law can apply to malfunctioning safety sensors, what types of problems often lead to claims, and what practical steps you can take now.
How California Lemon Law Applies to Safety Sensors
California’s Lemon Law—part of the Song-Beverly Consumer Warranty Act—generally applies when a vehicle has a defect covered by the manufacturer’s warranty that substantially impairs the vehicle’s use, value, or safety, and the manufacturer or its authorized dealer has had a reasonable number of opportunities to fix it. Safety sensor problems often meet the “safety” factor because they can affect braking, steering assistance, collision avoidance, or airbag operation. If the issue persists after repeated repair attempts, you may have grounds to pursue remedies through the Lemon Law process.
The law includes a helpful “presumption” within the first 18 months or 18,000 miles, whichever comes first. Under that presumption, your vehicle may be presumed a lemon if, within that window, the dealer has made two or more attempts to repair a defect that could cause serious injury or death, four or more attempts to repair the same defect, or if the vehicle has been out of service for repairs for a cumulative 30 or more days. Even if you’re outside those mile or time limits, you can still have a viable lemon claim; the presumption simply makes the pathway clearer.
If you’re dealing with malfunctioning safety sensors, focus on warranty coverage and documentation. Take the vehicle to an authorized dealership, describe the symptoms in writing, and keep copies of every repair order and invoice—even if the dealer “could not duplicate” the problem. Note any dashboard warnings, save photos or videos of the malfunction, and track days the vehicle sits at the shop. These records can help establish the pattern of defects and repair attempts necessary for a Lemon Law claim. For questions specific to your situation, a consultation with ZapLemon can help you understand your options.
Common Safety Sensor Issues That Trigger Claims
Many sensor-related defects recur even after replacements or software updates. Common examples include false collision warnings, phantom braking from adaptive cruise control, lane-keeping assist that tugs the wheel unexpectedly, or blind-spot monitors that miss vehicles or trigger constant alerts. Airbag and occupant classification sensors can misread seat weight and disable airbags, while ABS or stability control lights may illuminate due to intermittent wheel-speed or yaw-rate sensor faults.
Camera and radar misalignment is another frequent culprit. After a windshield replacement, minor body damage, or even a simple alignment, some systems require precise calibration. If calibrations don’t hold—or software updates introduce new glitches—drivers may see persistent warning lights, disabled driver-assistance features, or unpredictable behavior in traffic. Repeated attempts to recalibrate without lasting success can become important evidence of a continuing defect.
Electrical and wiring issues can also cause intermittent faults that are hard to reproduce. Damaged wiring harnesses, moisture intrusion behind bumpers, or corroded connectors near wheel wells may cause warnings that come and go. If your dealer visits follow a pattern—temporary fixes followed by the same warnings or symptoms—note the dates, mileage, and conditions when the problem happens. Ask the dealer to include your descriptions in the repair order, and request written confirmation of any software updates, sensor replacements, or technical service bulletins.
Need a case-specific review?
Use the case-review form to share the warranty, repair orders, dates, mileage, and supporting facts an attorney would need to evaluate, or call (844) 927-5366.
Attorney advertising. General information is not legal advice and does not create an attorney-client relationship. No result is promised or guaranteed.