The red oil can icon on the dashboard came on Toyota Corolla 2020? This is not just a warning - a signal about a drop in oil pressure below 0.3 bar, which, if ignored, leads to engine seizure within 15–30 minutes of driving. Symbols like exclamation mark in a circle (brake system) or battery with lightning (charging fault) require immediate stop, while yellow ESP icon often speaks only of a temporary disabling of the stabilization system. This article contains a transcript all 45+ characters dashboard divided into critical, warning and informational, as well as action algorithms for each case.
Manufacturers use unified standards for most indicators (e.g. ISO 2575 for safety badges), but some brands like BMW or Tesla add unique characters - how blue i-Circle for electric cars, indicating low battery charge. We will analyze not only classic icons (check engine, coolant temperature), but also rare ones - like airbag icon with manwhich appears when there is an error in the shock sensor in Volvo S60.
Red symbols: immediate stop required
Red on the dashboard is always brake light. Ignoring such indicators leads to breakdowns with a price tag ranging from 50,000 ₽ (turbine replacement) to complete loss of the engine. For example, thermometer icon in waves (engine overheating) when driving with the air conditioning turned on Kia Rio often appears due to a clogged radiator, and not due to a faulty pump.
Here are the top 5 critical symbols and what they mean in practice:
- 🔴 Oil watering can with drop — oil pressure is below normal. Reasons:
oil pump, leaking through the cylinder head gasket, low oil level. Action: Stop the engine and check the dipstick. - 🔴 Exclamation mark in a circle — failure of the brake system. Often triggered when brake fluid leaks or the pads wear down to metal.
- 🔴 Battery with zipper — no charging from the generator. Check the alternator belt and battery terminals.
- 🔴 Thermometer in the waves - engine overheating. Dangerous for aluminum blocks (risk of deformation).
- 🔴 Man with seat belt - the seat belt is not fastened or the shock sensor has tripped (in Audi Q7 may light up during heavy braking).
⚠️ Attention: If on Hyundai Solaris red lights up at the same time oil watering can and battery, this may indicate a broken timing belt. Stop immediately - further movement will destroy the valves.
Yellow and orange symbols: diagnostics required
Yellow indicators indicate faults that not yet critical, but can develop into serious problems. For example, ESP icon (yellow car with zigzags) on Skoda Octavia often lights up in winter due to icy wheel sensors - just clean them with a brush. But yellow engine icon (Check Engine) can mean anything: from a cracked spark plug to a catalytic converter clogged with soot.
Decoding of the most common yellow symbols:
| Symbol | Meaning | Possible reasons | Actions |
|---|---|---|---|
| 🚗 Check Engine | Engine malfunction | Misfire, lambda probe, catalyst | Read error code OBD-II |
| 🔋 Battery | Low voltage on-board network | Worn battery, oxidation of terminals, faulty generator | Check the voltage with a multimeter |
| 🛞 ABS | Anti-lock braking system failure | Broken sensor wire, contaminated ring gear | Clean sensors, check fuses |
| 💨 Tire Pressure Sensor (TPMS) | Puncture or low pressure | Slow leakage, seasonal pressure drop | Inflate the wheel to normal (usually 2.2–2.4 bar) |
Stands apart yellow AdBlue icon on diesel cars (for example, Mercedes E-Class). It appears when the urea level is below 2.5 liters - the car cannot be started after 5-10 engine starts. Refuel AdBlue needed only at certified gas stations: counterfeiting leads to failure of the catalytic converter (replacement cost - from 120,000 ₽).
If on Renault Duster blinking yellow spark plug icon, this does not always mean the spark plugs are faulty. Often the problem is in the ignition coils or armor wires. Check their resistance with a multimeter (norm: 5–15 kOhm).
Green and blue symbols: information indicators
These icons do not indicate malfunctions, but inform about enabled functions. For example, green headlight icon with wavy lines means activation adaptive light (as in Audi A6), which automatically adjusts the beam's range depending on speed. A blue snowflake icon on Nissan Qashqai turns on at temperatures below +4°C and reminds you of the risk of icing on the road surface.
List of useful information symbols:
- 🟢 Green arrow in a circle — cruise control is on. On Ford Focus may flash when there is a radar failure.
- 🔵 Blue key icon — the immobilizer is activated (on Lada Vesta sometimes it works falsely due to a dead battery in the key).
- 🟢 Green eco leaf icon — eco mode is turned on (limites engine speed to save fuel).
- 🔵 Blue phone icon — the device is connected via Bluetooth (to Toyota Camry may be displayed even when the phone is discharged).
On hybrid cars (for example, Toyota Prius) a unique one appeared green "EV Mode" icon - he points out that the car moves only on electricity. If this icon flashes, the traction battery is low and you need to switch to the gasoline engine.
Unique symbols of premium and electric cars
Manufacturers of premium brands (Mercedes-Benz, BMW, Porsche) and electric cars (Tesla, NIO) add exclusive indicators. For example, on BMW i4 yes battery icon with lightning, which means active energy recovery during braking. And on Tesla Model 3 dog icon turns on when the “Dog Mode” mode is activated (maintaining the temperature in the cabin for pets).
Some examples of rare symbols:
- 🔋 Battery icon with turtle (on Chevrolet Bolt) - power limitation due to low charge or overheating of the battery.
- 🚘 Car with open hood (on Jaguar I-Pace) — the charging port hatch is not closed.
- ⚡ Lightning in a square (on Porsche Taycan) — “Launch Control” mode is activated for maximum acceleration.
- 🛡️ Shield with checkmark (on Volvo XC90) - system
City Safetyready for automatic braking.
How to reset the service interval to Volkswagen Passat B8?
1. Turn on the ignition (without starting the engine). 2. Press and hold the button 0.0 on the instrument panel. 3. Turn the key to the "ON" position and hold the button for 10 seconds. 4. The display will show Service reset — release the button.
What to do if an unknown symbol lights up?
If an unfamiliar icon appears on the dashboard, follow this algorithm:
- Rate the color: red - stop immediately, yellow - you can get to the service station, green/blue - informational.
- Check the instructions: in the manual Mazda CX-5, for example, there is a section "Warning and Indicator Lights" with all the symbols.
- Read the error code: use scanner
ELM327(costs ~1,500 ₽) or contact us for diagnostics. - Check the obvious: oil level, brake fluid, tire pressure.
On many modern cars (for example, Hyundai Tucson 2023) at the press of a button OK The explanation of the burning symbol appears on the steering wheel directly on the dashboard display. If there is no such function, take a photo of the icon and find it in the picture in Google Lens - this will work in 90% of cases.
☑️ Checklist when an unknown symbol appears
Common mistakes when interpreting symbols
Many drivers confuse similar icons, which leads to unnecessary expenses. For example:
- 🚨 Steering wheel icon with exclamation mark often mistaken for power steering failure, although it means problem with the power steering system (EPS). On Kia Sportage it could simply be a sensor failure after washing.
- ⚠️ Yellow triangle with exclamation mark - a general warning sign, not a specific malfunction. You need to look at the accompanying messages on the display.
- 🔥 Spark plug icon mistakenly associated with diesel cars, although it means misfire and appears on gasoline engines (for example, VW Golf with engine
1.4 TSI).
Another common mistake is ignoring flashing characters. For example, if on Ford Explorer flashing ABS badge, this often indicates a loss of signal from the sensor on one wheel, rather than a complete system failure. It is enough to clean the sensor from dirt for the indicator to go off.
⚠️ Attention: By car fromStart-Stop(for example, Peugeot 3008) icon battery with lightning may come on every time the engine is started - this is normal if it goes out after 2-3 seconds. But if it stays on constantly, checkAGM battery(ordinary lead ones are not suitable for such systems).
FAQ: Answers to frequently asked questions about dashboard symbols
Why on Lada Granta Is the battery icon on even though the alternator is new?
There may be several reasons:
- 🔋 Wear diode bridge generator (checked with a multimeter in diode testing mode).
- 🔌 Oxidation ground wire from the generator to the body (clean with sandpaper).
- 🔄 Malfunction voltage regulator relay (on Granta it often “dies” after 3–4 years of use).
First, measure the voltage at the battery terminals with the engine running - it should be 13.8–14.4 V.
Is it possible to drive if the yellow light is on? Check Engine?
It is possible, but with reservations:
- ✅ If the engine runs smoothly, there are no extraneous sounds - get to the service station.
- ❌ If there is power dips, smoke from the exhaust or knocking - Call a tow truck.
On Skoda Octavia with engine 1.8 TSI Check Engine often lights up due to cracks in the intake manifold - ignoring it leads to oil getting into the cylinders.
How to reset an icon service interval on Renault Duster?
Instructions:
- Turn on the ignition (without starting the engine).
- Press and hold the button
Trip Reset(on the speedometer). - Turn the key to the "ON" position and hold the button for 10 seconds.
- The display will show
Service Due Reset— release the button.
If it doesn't work, repeat the procedure 2-3 times or use a diagnostic scanner.
What does the icon mean? key with zipper on Tesla Model Y?
This is an indicator reduced power due to:
- 🔋 Low battery (less than 5%).
- ❄️ Battery hypothermia (at temperatures below -20°C).
- ⚡ Failure in the battery management system (
BMS).
Solution: connect to charging or reboot the system through the menu Controls > Safety > Power Off.
Why on Mitsubishi Outlander icon flashing ABS when moving?
Probable reasons:
- 🧲 Contamination of the ABS sensor on one of the wheels (especially after off-roading).
- 🔌 Broken sensor wire (often rubs against the fender liner).
- 🛠️ Malfunction ABS pump unit (requires replacement, cost ~25,000 ₽).
First, inspect the sensors for damage and clean them of dirt. If the blinking continues, go for diagnostics.
Red symbols (oil, brakes, temperature) are a signal to stop immediately. Yellow (Check Engine, ABS) - require diagnostics within 1-2 days. Green/blue are informational and do not require action.