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Warning lights – Corolla E170

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
What it meansParking brake is on, or brake fluid is low, or a fault in the brake system.
Fitted onToyota Corolla (11th gen, E170)
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
What it meansThe battery is not being charged (alternator, belt or wiring fault).
Fitted onToyota Corolla (11th gen, E170)
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
What it meansEngine oil pressure is too low while the engine runs.
Fitted onToyota Corolla (11th gen, E170)
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
What it meansFault in the engine control, electronic throttle or CVT control system.
Fitted onToyota Corolla (11th gen, E170)
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.

Airbag (SRS) warning light

Red Get it checked soon
What it meansFault in the airbag or seat belt pretensioner system.
Fitted onToyota Corolla (11th gen, E170)
What to doAirbags may not work in a crash. Get it checked with a scanner soon.
ABS

ABS warning light

Amber Get it checked soon
What it meansFault in the anti-lock brake system. Normal brakes still work.
Fitted onGrades with ABS
What to doBrake gently: wheels can lock in hard braking. Get the ABS codes read. If the brake light is also on, stop safely.

Power steering (EPS) warning light

Amber Get it checked soon
What it meansFault in the electric power steering. Steering may become heavy.
Fitted onToyota Corolla (11th gen, E170)
What to doDrive carefully and get the steering system checked.

Stability control / slip indicator

Amber Get it checked soon
What it meansFlashes while the stability or traction system is working. Stays on if the system has a fault.
Fitted onIf equipped
What to doFlashing: ease off the throttle. Staying on: you can drive, but get it checked.
!

Master warning light

Amber Get it checked soon
What it meansComes on with a buzzer when another warning system finds a fault. Read the message or the other light that is on.
Fitted onToyota Corolla (11th gen, E170)
What to doCheck which other light or message is shown and follow that advice.
Scanner guide

Scanner guide: Corolla E170

The Corolla E170 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.