What is CARUTOO?
CARUTOO is an AI car care and repair assistant developed and operated by Foavi Inc. It helps drivers understand symptoms, possible causes, severity, estimated repair cost, and practical next steps before visiting a repair shop.
Knowledge Base
Car diagnosis questions, answered clearly.
Practical guidance on warning lights, OBD codes, repair costs, leaks, maintenance, and when to stop driving. Use this as a starting point, then run a CARUTOO diagnosis for vehicle-specific guidance.
Diagnosis Basics
5 questions
Is CARUTOO a replacement for a mechanic?
No. CARUTOO provides AI-generated informational guidance. It can help you prepare questions, understand risk, and decide what to check first, but it is not a substitute for an in-person inspection by a qualified mechanic.
When should I stop driving immediately?
Stop driving if you smell fuel, see heavy smoke, lose braking power, see an oil pressure warning, the engine is overheating severely, or the vehicle feels unsafe to control. Pull over safely and contact roadside assistance or a qualified professional.
What information makes an AI diagnosis more useful?
Helpful details include the symptom, when it happens, speed, temperature, recent repairs, dashboard lights, mileage, vehicle year, make, model, fuel type, and location. Photos can also help identify visible warning signs and prepare a better inspection checklist.
Can CARUTOO diagnose a car without an OBD scanner?
Yes, many early checks can be based on symptoms, vehicle details, warning lights, and driving conditions. An OBD code or scanner reading can improve accuracy, especially for engine and emissions problems.
Warning Lights
5 questions
What should I do when the check engine light turns on?
If the light is steady and the car drives normally, schedule a diagnostic check soon. If the light is flashing, reduce speed, avoid hard acceleration, and stop driving as soon as it is safe because misfires can damage the catalytic converter.
Is a flashing check engine light serious?
Yes. A flashing check engine light often points to an active misfire or condition that can damage expensive emissions components. It should be treated as urgent and inspected quickly.
What does an oil pressure warning mean?
An oil pressure warning can indicate dangerously low oil pressure or low oil level. Stop the engine safely and check oil level. Driving with low oil pressure can cause severe engine damage.
What does a battery warning light mean?
A battery warning usually means the charging system is not maintaining voltage. The issue may involve the alternator, battery, belt, wiring, or terminals. The car may keep running briefly but could stall once voltage drops.
What should I do if the temperature gauge is high?
Turn off the air conditioning, turn on cabin heat if safe, and pull over when possible. Do not open a hot coolant cap. Overheating can damage the head gasket, engine, and cooling system.
OBD Codes
5 questions
What does code P0420 mean?
P0420 usually means the catalytic converter system is operating below efficiency. Common causes include a failing catalytic converter, oxygen sensor issues, exhaust leaks, misfires, or fuel mixture problems.
Does an OBD code tell me exactly which part to replace?
Not always. An OBD code identifies a system or abnormal reading, not always the failed part. A good diagnosis also checks symptoms, freeze-frame data, wiring, leaks, and related components before replacing parts.
Can I clear a code and keep driving?
Clearing a code does not fix the underlying problem. If the issue remains, the code will return. Clearing codes may also erase useful diagnostic data that a mechanic could use.
Why do multiple OBD codes appear at the same time?
One root issue can trigger several codes. For example, a vacuum leak, weak battery, wiring fault, or misfire can create related sensor and emissions codes. Prioritizing the first cause matters.
Are generic OBD readers enough?
A generic reader is useful for basic powertrain codes, but some ABS, airbag, transmission, body, and manufacturer-specific codes may require a more advanced scanner.
Symptoms
6 questions
Why does my car shake when braking?
Common causes include warped brake rotors, uneven brake pad deposits, worn suspension parts, tire issues, or wheel bearing problems. If shaking is strong or braking feels reduced, have it inspected soon.
Why does my steering wheel shake at highway speed?
Common causes include wheel imbalance, tire damage, bent wheels, alignment issues, worn suspension components, or brake rotor runout. Tire and wheel checks are often the first step.
Why does my car make a grinding noise when braking?
Grinding can mean brake pads are worn down to metal, debris is caught near the rotor, or a caliper is sticking. Avoid delaying service because rotor and caliper damage can increase cost.
Why does my car squeal when starting or accelerating?
A squeal may come from a worn serpentine belt, belt tensioner, pulley, brake wear indicator, or accessory component. The exact cause depends on when the sound occurs.
Why does my car lose power when accelerating?
Possible causes include misfires, clogged air or fuel filters, fuel pump problems, turbo issues, transmission problems, exhaust restrictions, or limp mode triggered by the engine computer.
Why does my car smell like gasoline?
A fuel smell can be serious. Possible causes include a fuel leak, loose gas cap, evaporative emissions issue, injector leak, or exhaust running rich. If the smell is strong, stop driving and inspect for leaks safely.
Leaks
3 questions
How can I identify a fluid leak under my car?
Color and location help. Engine oil is usually brown or black, coolant may be green, orange, pink, or blue, transmission fluid is often red or brown, brake fluid is clear to amber, and water from air conditioning is usually normal.
Is a coolant leak urgent?
A coolant leak can become urgent because overheating can cause major engine damage. If coolant level drops, the temperature gauge rises, or steam appears, stop driving and have the cooling system checked.
Is a small oil leak safe to ignore?
A small oil leak may not be an immediate emergency, but it should be monitored and repaired. Low oil level, burning smell, smoke, or oil dripping on hot parts increases urgency.
Repair Costs
3 questions
How accurate are CARUTOO repair cost estimates?
Cost ranges are estimates based on issue type, vehicle details, location, parts quality, and labor assumptions. Actual prices vary by shop, region, part availability, and what the inspection finds.
Why do repair estimates vary so much between shops?
Labor rates, diagnostic time, part quality, warranty coverage, shop overhead, and whether related parts are included can change the estimate. Ask for a written breakdown of parts, labor, fees, and warranty.
Should I choose a dealer or an independent shop?
A dealer can be useful for warranty work, recalls, complex software issues, and brand-specific diagnostics. An independent shop may be more cost-effective for maintenance, brakes, suspension, and common repairs.
Maintenance
2 questions
How often should I change engine oil?
Follow the vehicle owner's manual and oil-life monitor. Many modern vehicles use intervals around 5,000 to 10,000 miles, but severe driving, short trips, heat, towing, and age can require shorter intervals.
When should brake pads be replaced?
Brake pads should be replaced when they reach the minimum safe thickness, make wear-indicator noise, cause reduced braking performance, or show uneven wear. A shop can measure pad thickness during inspection.
Reports & App
1 questions
What happens after I unlock a full report?
The full report can include cause ranking, severity, estimated repair cost, mechanic conversation guidance, what to approve or question, safety notes, and options to save the report in the CARUTOO app.