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Warning lights – Corolla E140

What each light in the meter means, how serious it is, and what to do. Most lights come on for a few seconds when you turn the key to ON — that is a bulb check and is normal.

Stop safely nowGet it checked soonInformation only

Brake system warning light

Red Stop safely now◔ double-check
What it meansParking brake is on, or brake fluid is low, or a fault in the brake system.
Fitted onToyota Corolla (10th gen, E140)
What to doRelease the parking brake. If it stays on, stop in a safe place and check the brake fluid. Do not drive if the pedal feels soft.

Charging system warning light

Red Stop safely now◔ double-check
What it meansThe battery is not being charged (alternator, belt or wiring fault).
Fitted onToyota Corolla (10th gen, E140)
What to doSwitch off A/C, blower and radio. Stop safely and check the drive belt. Get the charging system checked before the battery runs flat.

Low oil pressure warning light

Red Stop safely now◔ double-check
What it meansEngine oil pressure is too low while the engine runs.
Fitted onToyota Corolla (10th gen, E140)
What to doStop and switch off the engine at once. Check the oil level with the dipstick. Do not drive until the cause is found.

Check engine light (MIL)

Amber Get it checked soon◔ double-check
What it meansThe engine computer has found a fault in the engine, emission or gearbox control system.
Fitted onToyota Corolla (10th gen, E140)
What to doGet it checked soon. Read the stored code with an OBD scanner. If it flashes, the engine is misfiring: drive gently and get it checked at once.
Scanner guide

Scanner guide: Corolla E140

The Corolla E140 uses standard OBD-II (CAN), so a cheap phone dongle is enough for engine codes.

Cheap ELM327 (Bluetooth or Wi-Fi) + Torque or Car Scanner app
Works

Plug in, turn the key to ON, open the app and read the codes.

Workshop multi-brand scanner (Launch X431, ThinkCar)
Works best

The next step if a phone dongle cannot read a fault, for example ABS or airbag.

Where is the socket: Not confirmed in our sources for this car. A workshop can show you where it is.

What it can read:

  • Engine (check-engine light) codes and live engine data.

Good to know:

  • No scanner needed for the oil, battery or handbrake light: they come from a simple switch or sensor. Check the oil level, drive belt / battery terminals and brake fluid first.

Source: UstadFix owner notes

Symbols are our own drawings and may look slightly different from your meter. Not every car has every light; it depends on grade and options.