Pre-Collision System Unavailable: What the Clean Sensor Warning Means
Why Toyota shows Pre-Collision System Unavailable, Clean Sensor: which front sensor is blocked, how to clean the radar and camera, whether it is safe to drive, and repair costs.
Symptom guide
Symptoms
Not sure what your car is trying to tell you? This section helps you understand common warning signs like strange noises, rough idle, shaking, dashboard lights, leaks, smells, and starting issues. Each guide explains what the symptom may mean, how serious it is, what to check first, and when it is time to stop driving and get help.
Most likely causes
Is it safe to drive?
What to check first
Car AC Blows Cold Then Warm? Causes, Fixes and Repair Cost
Why a car AC blows cold then warm: how the timing points to evaporator icing, a low charge, a weak condenser fan, or a failing clutch, what to check first, and repair costs.
Car AC Leaking Water Inside: Causes and Repair Cost
Why your car AC leaks water onto the passenger floor, how to tell condensation from a coolant leak, how to clear a clogged drain tube, and what repairs cost.
Car AC Only Works While Driving? Usually the Condenser Fan
Car AC cold while driving, warm at idle: a failed condenser fan is the most common cause. Inspection steps, fault codes, and repair costs.
Car AC Smells Bad: What Each Smell Means and How to Fix It
Learn what musty, sweet, burning, and rotten-egg smells from car vents can mean, what to check first, when to stop driving, and typical repair costs.
Car AC Not Blowing Cold Air: Common Causes, First Checks, and Repair Cost
AC running but blowing hot air points to refrigerant loss, a failed compressor clutch, a blocked condenser, or a clogged cabin filter. Here is what to check first and what repairs cost.
Oil Light Flickers at Idle But Oil Level Is Full
An oil warning light that flickers at idle with a full oil level usually points to low actual oil pressure, a failing pressure sensor, or oil too thin for the engine specification. A mechanical pressure test is needed before driving further.
Car Starts With a Jump Then Dies: Battery or Alternator?
A car that starts with a jump then dies shortly after almost always has a failed alternator, not a dead battery. Here is how to tell the difference and what to do next.
Pre-Collision System Malfunction: Causes, Sensor Checks, and When to Recalibrate
A pre-collision system malfunction disables forward collision warning and automatic emergency braking. Learn the common causes and how to diagnose them before visiting a dealer.
EV 12V Battery Not Charging
EV 12V battery not charging is usually a DC-DC converter or ICCU fault, not a simple swap. Here is what causes it, what to check, and when it becomes urgent.