Battery light on with the engine running: what to check and when to stop
Learn why a battery warning light while driving may signal a charging fault, which clues help distinguish causes, and when to stop safely.
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Everyday Car
Everyday Car explains maintenance, vehicle warning signs, tires, batteries, used cars, and paperwork for people who want to take better care of their car without having to understand mechanics.
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Car parked for weeks: what to check before driving again
Learn how to check the battery, tires, and fluids after weeks of inactivity, plus the signs that mean the car should stay parked.
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Car pulls to one side when braking: how to separate tire, alignment and brake faults — and when to stop
If a car veers while braking, the moment the pull appears helps separate tire, alignment and possible brake imbalance issues. See what you can check without disassembly and which s...
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Flashing vs. steady check engine light: why urgency changes and when to slow down
A flashing light raises the urgency; a steady light still needs diagnosis. Learn when to reduce load, stop, and avoid replacing parts by guesswork.
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Maintenance & Service1 article
Service checks, fluids, filters, wear and preventive maintenance explained so you know what to monitor and when to seek a professional assessment.
Dashboard & Electrical Systems6 articlesDashboard lights, battery, starter, alternator, lighting and electrical systems explained in accessible language.
Tires and Wheels4 articlesTire pressure, wear, sizes, TWI indicators, wheels, alignment and signs that affect safety and handling.
Mechanics Explained3 articlesEngine, gearbox, cooling, suspension, brakes and other systems explained to understand how they work without improvising repairs.
Buying and Selling Used Vehicles2 articlesChecklists, history, inspection, negotiation, documentation and decisions to buy or sell a used car.
Documentation and Rights10 articlesCRLV, transfer, recall, guarantees, obligations and official services related to vehicle ownership.
Use & Care3 articlesFuel economy, fuel, cleaning, parking, periods of disuse and everyday care to preserve the vehicle.
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EPC light on: what it monitors, when to stop and why the dashboard does not identify one specific part
The EPC light signals a fault in electronic power control. Learn how to interpret it, when to slow down or stop, and why symptoms and a scan tool are needed for diagnosis.
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Car Won't Start but the Dashboard Lights Up: How to Tell a Battery, Starter or Other Problem Apart
The sound and cranking speed can help separate a weak battery, starter fault and fuel, ignition or security problems without replacing parts by guesswork.
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Tire sidewall bubble: why it appears, why it cannot be repaired, and when to stop driving
Learn how a sidewall bubble forms after structural damage, how to tell it from normal marks, and why the tire must be taken out of service.
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Decree 13,116/2026: how long Brazil's gasoline and ethanol PIS/Cofins cuts last — and why pump prices are not fixed
The tax cut runs from September 10 through October 9, 2026. See the new rates, the per-liter effect and why retail pass-through is not automatic.
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Contran Resolution 1.031/2026: what changed in alcohol enforcement and when the new annex takes effect
Brazil's new rule already changed DUI enforcement procedures, but MBFT Annex III only takes effect 60 days after publication. See the timeline and practical impact.
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Expired Brazilian CNH in 2026: who is valid through Dec. 9 and when the 30-day renewal period starts
Contran Deliberation 279 extended through December 9 the validity of CNHs and ACCs expiring from June 5 through December 8, 2026. See who is covered and when the 30-day renewal win...
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Free flow in CNH do Brasil: how to check, pay and regularize tolls by Nov. 16
CNH do Brasil centralizes integrated electronic toll passages, but payment is completed through the concessionaire. See statuses, deadlines and the transition rule through November...
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Can you use a private car for CNH lessons and the driving test? What still applies after the STF case was closed
Yes. Contran Resolution 1,020 allows a private car in lessons and the driving test, while safety rules and Detran procedures still apply.
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Brazil cuts R$0.63 per liter in gasoline taxes: why pump prices may fall by less
A temporary PIS/Pasep and Cofins cut lowers the federal tax burden on gasoline, but retail prices also depend on costs, state taxes and margins across the supply chain.
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- 01I sold the car and the buyer didn't transfer it: how to check the sales communication and what to do nowDocumentation and Rights
- 02I paid the vehicle licensing fee, but the CRLV-e did not update: how to find out what is blocking issuanceDocumentation and Rights
- 03Auction car included in the document? How to confirm before buying a used oneBuying and Selling Used Vehicles
- 04Coolant lowering without apparent leak: what to watch out for and when to stop runningMaintenance & Service
- 05Alagoas vehicle licensing 2026: plate endings 3 and 4 expire in September and how to download the CRLV-eDocumentation and Rights
Maintenance & Service
Service checks, fluids, filters, wear and preventive maintenance explained so you know what to monitor and when to seek a professional assessment.
Coolant lowering without apparent leak: what to watch out for and when to stop running
If the coolant level drops without leaving a pool, the pattern of loss matters. See how to measure, what to watch for and which signs require stopping the car.
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Dashboard & Electrical Systems
Dashboard lights, battery, starter, alternator, lighting and electrical systems explained in accessible language.
Check engine light came on and then went off: is the fault still stored and when should you scan?
The light can turn off before the code disappears. Learn what OBDBr-3 stores, when a scan is useful and what to request in the report.
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Battery light came on and went off while driving: do you still need to check it?
If the battery light came on while driving and then disappeared, it is worth investigating: the warning may indicate an intermittent charging-system fault even if the car seems nor...
Read articleBattery light on with the engine running: what to check and when to stop
Learn why a battery warning light while driving may signal a charging fault, which clues help distinguish causes, and when to stop safely.
Read articleFlashing vs. steady check engine light: why urgency changes and when to slow down
A flashing light raises the urgency; a steady light still needs diagnosis. Learn when to reduce load, stop, and avoid replacing parts by guesswork.
Read articleTires and Wheels
Tire pressure, wear, sizes, TWI indicators, wheels, alignment and signs that affect safety and handling.
Brazil's Inmetro tire label: how to balance wet grip, rolling resistance and noise
Learn what each ENCE rating measures and how to weigh wet-weather safety, efficiency and noise instead of choosing a tire only by an A grade.
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Tire loses pressure every week with no visible puncture: how to find the cause
Learn how to separate normal pressure loss from a valve, bead, wheel, or slow puncture leak using a pressure log and practical clues.
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Steering wheel vibrates at certain speeds: balance, tire, wheel or another cause?
A vibration that appears only within a certain speed range often points first to the tire/wheel assembly, but braking, acceleration and idling change the diagnosis.
Read articleTire sidewall bubble: why it appears, why it cannot be repaired, and when to stop driving
Learn how a sidewall bubble forms after structural damage, how to tell it from normal marks, and why the tire must be taken out of service.
Read articleMechanics Explained
Engine, gearbox, cooling, suspension, brakes and other systems explained to understand how they work without improvising repairs.
E32 gasoline in Brazil in 2026: what changes for flex-fuel and gasoline-only cars — and what does not need adjustment
Brazil's temporary E32 rule raises anhydrous ethanol in regular gasoline to 32%. See what changes for flex-fuel and gasoline-only cars and when symptoms deserve diagnosis.
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Temperature rises in traffic and falls when the car is moving: what this pattern indicates
When the temperature rises in congestion and recedes in motion, the airflow through the radiator becomes an important clue, but it does not close the diagnosis alone.
Read articleCar pulls to one side when braking: how to separate tire, alignment and brake faults — and when to stop
If a car veers while braking, the moment the pull appears helps separate tire, alignment and possible brake imbalance issues. See what you can check without disassembly and which s...
Read articleCars without unnecessary complexity, decisions with context
Everyday Car exists to help owners better understand the vehicle they use. We explain maintenance, dashboard warning lights, tires, batteries, mechanics, buying used cars, and documentation in accessible language, making clear what a driver can observe and what requires professional evaluation. The goal is not to replace the owner’s manual, a repair shop, the manufacturer, or traffic authorities, but to help owners be better informed before making a decision.