Introduction: What does the mysterious symbol hide?

You get behind the wheel, turn the ignition key, and suddenly the dashboard lights up. star icon, which did not exist before. Is this a serious breakdown warning, a maintenance reminder, or just an electronic failure? This symbol causes panic among many drivers, especially if it appears for the first time. In fact he has specific values, depending on the car make and year of manufacture.

Unlike universal indicators like CHECK ENGINE or ABS, the star icon is unique manufacturer signal, which can mean anything from an oil change reminder to a critical airbag malfunction. In this article, we will analyze all the possible reasons for its occurrence, learn to distinguish “false positives” from real problems, and give step-by-step instructions on what to do in each case.

It is important to understand: this symbol cannot be ignored. Even if the car behaves normally, star icon often signals hidden faults that can lead to expensive repairs or an emergency. For example, in Toyota Corolla 2018+ it may indicate problems with the system Pre-Collision, and in Volkswagen Passat B8 - a malfunction of the adaptive cruise control.

What does the star icon mean in different car brands?

Manufacturers use this symbol to indicate specific functions, which are not covered by standard indicators. Here are the most common values depending on the brand:

  • 🔧 Toyota/Lexus: system problems Safety Sense (radars, cameras, collision sensors) or maintenance reminder.
  • 🚗 Volkswagen/Audi/Skoda: system malfunction Lane Assist (lane keep assist) or adaptive headlights Matrix LED.
  • ⚡ Hyundai/Kia: error in the operation of the hybrid system (for models with HEV/PHEV) or a malfunction in the electric power steering.
  • 💡 Mercedes-Benz: signal that a software update or system check is required Distronic Plus.
  • 🛡️ BMW: system problems Driving Assistant (automatic braking, blind spot monitoring).

Interestingly, in some models Ford (for example, Focus 4 or Kuga) this icon lights up when activating eco-driving mode - and this is the only case when it does not indicate a malfunction. To accurately determine the cause, you need to consider combination with other indicators and vehicle behavior.

Car make Model (example) Probable Cause Driver actions
Toyota Camry XV70 (2018+) System failure Pre-Collision (radars/cameras) Check the cleanliness of the sensors, reboot the system
Volkswagen Tiguan 2 (AD1) Malfunction Lane Assist or Matrix LED Update the software or contact your dealer
Hyundai Tucson Hybrid (NX4) Hybrid system or ESD error Diagnostics with a scanner Hi-Scan Pro
Mercedes-Benz E-Class (W213) Software update required or crashed Distronic Connect to XENTRY for diagnostics
⚠️ Attention: If the star icon is blinking in red - this is a signal about critical fault (for example, failure of airbags or brake system). Stop immediately and call a tow truck!
📊Have you ever had the star icon light up?
Yes, in your own car
Yes, by rental car
No, I haven't encountered it
I don't know what it is

Top 5 reasons for the star icon to appear

Analysis of data from diagnostic scanners shows that in 80% of cases this symbol appears due to five key issues. Let's look at them in detail - from the most harmless to the critical.

1. Maintenance reminder

Many modern cars (especially Toyota, Honda, Mazda) use the star icon as a signal about upcoming maintenance. It lights up 1–2 thousand km before the scheduled service and may be accompanied by the inscription MAINTENANCE REQUIRED.

To reset this reminder, it is usually enough to:

Hold the mileage reset button (with the ignition off)|Turn the ignition on (without starting the engine)|Hold the button for 10+ seconds until the indicator flashes|Release and turn off the ignition-->

2. Driver Assistance System (ADAS) failure

If your car is equipped adaptive cruise control, lane keeping system or automatic braking, the star icon often indicates that they are faulty. Reasons:

  • 🧹 Contamination of sensors (cameras, radars, lidars).
  • 🔌 Damage to wiring or connectors.
  • 🖥️ Outdated software.

For diagnostics you will need a scanner with support ADAS calibration (for example, Bosch KTS or Launch X431).

3. Problems with the hybrid system

In hybrid cars (Toyota Prius, Hyundai Ioniq, Ford Fusion Hybrid) this symbol can signal:

  • ⚡ Discharge of high-voltage battery.
  • 🔋 Malfunctions of the inverter or voltage converter.
  • 🛢️ Hybrid system coolant leak.

In this case DIY repair is dangerous - High voltage components require special equipment and training.

4. Errors in the operation of the electric power steering (EPS)

If the star icon is accompanied by increased steering effort or warning EPS FAULT, the problem lies in the electric booster system. Common reasons:

  • 🔧 Worn steering rack gear.
  • 🔌 Short circuit in the power circuit.
  • 🖥️ Failure in the control unit EPS.

A temporary solution is to reboot the system (removing the battery terminal for 10 minutes), but a full repair will require diagnostics.

5. Airbag malfunction (SRS)

One of the most dangerous options is when the star icon duplicates or complements the indicator SRS/AIRBAG. This could mean:

  • 💥 Airbag squib failure.
  • 🔌 Break in the shock sensor circuit.
  • 🛠️ Incorrect operation of the control unit SRS.
⚠️ Attention: Driving with this problem prohibited — airbags may work spontaneously or not work in an accident!
💡

If the star icon appears along with other indicators (ABS, ESP, SRS), the problem is serious. Carry out diagnostics immediately!

How to diagnose the problem yourself

Before going to the service station, you can perform primary diagnosis on your own. Here is a step-by-step algorithm:

  1. Check the combination with other indicators. Remember which icons light up along with the stars. For example:

    • 🔋 + ⚡ = problem with the hybrid system.
    • 🚗 + 💨 = fault in the driver assistance system.
    • 🛡️ + 💥 = airbag error.

  2. Study the behavior of the car. Please note:

    • 🔊 Extraneous sounds (creaks, knocks, humming).
    • 🛣️ Changes in control (tight steering wheel, poor braking).
    • 💡 Unusual reactions of electronics (spontaneous turning on of headlights, windshield wipers).

  • Try resetting the error. Sometimes it helps:

    • 🔄 Reboot the on-board computer (remove the battery terminal for 10–15 minutes).
    • 🔧 Resetting the service interval (if the reason is a maintenance reminder).

    • Connect the diagnostic scanner. Even simple ELM327-the adapter will show error codes. The explanation can be found in the manual or on the manufacturer’s website.

      • If after these steps the icon disappears, the problem was temporary. If not, sign up for diagnostics. Don't ignore the symbol, even if the car “drives normally”: many faults (for example, in ADAS or SRS) appear only in a critical situation.

      How to connect ELM327 for diagnostics

      1. Insert the adapter into the OBD-II connector (usually under the steering wheel).

      2. Connect to it via Bluetooth/Wi-Fi from your phone.

      3. Launch an application (such as Torque Pro or Car Scanner).

      4. Select "Count errors" (DTC).

      5. Write down the error codes (for example, P0123, C1201) and decipher them.

      Different cars require different approaches to removing the star icon. Below - detailed instructions for the most common brands.

      Toyota Corolla (E210, 2019–2023)

      In this model, the star icon most often indicates problems with the system Toyota Safety Sense 2.0.

      Check the cleanliness of the front camera (under the windshield)|Make sure that the radar is not covered with dirt or stickers|Reboot the system (turn off the ignition, wait 30 seconds, turn it on again)|If the error persists, a flashing via Techstream-->

      Volkswagen Passat B8 (2015–2023)

      Here the symbol is usually associated with the system Lane Assist or Matrix LED. To reset the error:

      1. Turn on the ignition (without starting the engine).
      2. Press and hold the button SET on the steering wheel.
      3. Scroll to Assistance systems.
      4. Select Reset and confirm.

      If that doesn't help, check the fuses. F37 (10A) and F48 (5A) in the block under the hood.

      Hyundai Tucson Hybrid (NX4, 2021–2026)

      In the hybrid version, this icon often indicates problems with high voltage battery. To reset:

      1. Turn off the ignition.
      2. Press and hold the brake pedal.
      3. Turn on the ignition (without starting the engine).
      4. Hold the brake pedal for 10 seconds.
      5. Release the pedal and turn off the ignition.

      If the icon remains, diagnostics is required Hyundai Hi-Scan Pro.

      Mercedes-Benz E-Class (W213, 2016–2023)

      In Mercedes this symbol often means need for software update. To check:

      1. Go to menu System → Software update.
      2. Connect to Wi-Fi.
      3. Select Check for updates.
      4. If updates are available, install them.

    If there is no update, but the icon is on, contact your dealer for flashing via XENTRY.

    💡

    B BMW 5 Series (G30) The star icon may appear after replacing the battery. To reset it, perform "battery registration" via ISTA or Rheingold.

    When professional help is needed

    Some problems signaled by asterisks are cannot be eliminated on your own. Here are the cases when you need to go to a service station:

    • 🔧 The icon is lit in red or flashes.
    • 🚨 Appears with SRS, ABS or ESP.
    • 🛠️ After resetting, the error returns within 24 hours.
    • 💥 The car behaves inappropriately (jerking, poor braking, electronic failures).
    • ⚡ Diagnostic scanner shows errors with code Uxxxx (problems with the data bus).

    The cost of diagnostics in the service depends on the make of the car:

    Brand Average diagnostic price (₽) Time (min) Required Equipment
    Toyota/Lexus 1 500–2 500 30–60 Techstream, Launch X431
    Volkswagen/Audi 2 000–3 500 40–80 ODIS, VCDS
    Hyundai/Kia 1 200–2 000 20–40 Hi-Scan Pro, GDS
    Mercedes-Benz 3 000–5 000 60–120 XENTRY, DAS
    ⚠️ Attention: If the diagnostics showed errors in the systems ADAS (adaptive cruise, lane keeping), after repair will be required calibration of cameras and radars. Without this, the systems will not work!

    Prevention: How to avoid the star icon

    The best way to deal with this problem is prevention. Follow these guidelines to minimize the risk of the icon appearing:

    • 📅 Follow the maintenance regulations. Many errors occur due to missed oil, filter or brake fluid changes.
    • 🧹 Keep the sensors clean. Wipe cameras and radars once a month (especially in winter, after treating roads with reagents).
    • 🔋 Monitor the condition of the battery. A weak battery can cause problems with electronic systems.
    • 🖥️ Update your software. Manufacturers regularly release patches to fix bugs.
    • 🛡️ Avoid "makeshift" repairs. Poor electrical intervention often leads to errors in driver assistance systems.

      • Pay special attention winter period — low temperatures and moisture most often provoke failures in electronics. If you frequently drive off-road, check the integrity of the wiring and connectors after each ride.

      💡

      Regular diagnostics (every 6 months) help identify problems at an early stage and avoid costly repairs.

      FAQ: Frequently asked questions about the star icon

      Is it possible to drive if the star icon is on?

      Depends on the reason. If this is a maintenance reminder or a temporary failure (for example, after replacing the battery), you can. If icon red, flashes or is accompanied by other indicators (SRS, ABS) — you can't drive. In most cases, this is a signal of a malfunction that affects safety.

      How to reset the star icon without a scanner?

      Try these methods:

      1. Removing the battery terminal for 10–15 minutes (resetting the on-board computer).
      2. For Toyota: Hold the mileage reset button while turning on the ignition.
      3. For VW: press SET on the steering wheel and select Reset on the menu.

      If that doesn't help, you'll need a diagnostic scanner.

      How much does it cost to fix this problem?

      The price depends on the reason:

      • 🔧 Resetting the service interval: free (you can do it yourself).
      • 🖥️ Software update: 1 500–3 000 ₽.
      • 🛠️ Repair ADAS or SRS: from 5,000 ₽ (including diagnostics).
      • 🔋 Replacing the high-voltage battery in a hybrid: from 100,000 ₽.
      Can the star icon come on due to bad gasoline?

      No, this symbol not connected to the fuel system. It only signals problems with electronics, driver assistance systems or service intervals. However, bad fuel can cause other errors (eg. CHECK ENGINE).

      What should I do if the icon appears periodically (it turns on and then goes off)?

      This is a sign unstable faultoften associated with:

      • 🔌 Poor contact in connectors (needs to be checked and cleaned).
      • 📶 Interference with radars/cameras (for example, from magnetic stickers on glass).
      • 🔋 Voltage sags (check the battery and generator).

      It is recommended to carry out full diagnostics, since periodic failures can lead to system failure at a critical moment.