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ABS and Traction Control Lights On - 2017 Mirage G4

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Brittany E. · rep 0 · May 22, 5:32 AM · 1 replies · solved · Question

Vehicle: 2017 Mitsubishi Mirage G4 SE

Hi all,

I'm having an issue with my 2017 Mitsubishi Mirage G4 SE. Recently, both the ABS warning light and the Traction Control (TCL) light came on simultaneously on my dashboard. The car still drives, but I've noticed the brakes feel a bit different, almost like the ABS is trying to engage at very low speeds sometimes, even when I'm not braking hard.

I tried disconnecting the battery for a bit to reset it, but the lights came back on. I don't have an OBD-II scanner that can read ABS codes. Has anyone experienced this with their Mirage G4? What could be the cause?

Thanks for your help!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:32 AM

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ClearTheCode admin answer:

When both the ABS and Traction Control (TCL) lights illuminate on your 2017 Mitsubishi Mirage G4 SE, it almost always indicates a fault within the Anti-lock Braking System (ABS) that also affects the Traction Control System, as they often share sensors and control modules. The feeling of the ABS engaging at low speeds without hard braking is a strong clue.

  1. Common Causes for ABS/TCL Lights:

    • Wheel Speed Sensor Failure: This is the most frequent cause. Each wheel has a sensor that monitors its rotational speed. If a sensor is dirty, damaged, or faulty, the ABS module receives incorrect data, triggering the lights. A common OBD-II code for this might be C0040 (Right Front Wheel Speed Sensor Circuit Malfunction) or similar codes for other wheels.
    • Damaged ABS Wiring: The wiring harness leading to a wheel speed sensor can become frayed, cut, or corroded.
    • ABS Module Failure: Less common, but the ABS control module itself can fail. This is usually a more expensive repair.
    • Low Brake Fluid: While less likely to trigger both lights simultaneously, extremely low brake fluid can sometimes cause issues.
    • Tone Ring Damage: The tone ring (a toothed ring that the wheel speed sensor reads) can become damaged or corroded, leading to incorrect readings.

  2. When to See a Shop:

    • Immediately: While your regular brakes may still function, the ABS and TCL systems are disabled. This means you won't have anti-lock braking in an emergency stop, and your traction control won't prevent wheel spin. This significantly impacts safety, especially in adverse weather conditions. It's crucial to have this diagnosed and repaired promptly.

What a Shop Will Do:

  • Scan for ABS Codes: A professional shop will use an advanced OBD-II scanner capable of reading manufacturer-specific ABS codes. This code will usually point directly to the faulty sensor or circuit.
  • Inspect Wheel Speed Sensors: They will visually inspect the sensors and their wiring at each wheel for damage or dirt.
  • Test Sensor Readings: Using the scanner, they can monitor live data from each wheel speed sensor to identify which one is providing an erratic or no signal.
  • Check Tone Rings: Inspect the tone rings for damage or debris.

Do not delay in getting this checked. Driving without functional ABS and traction control can be dangerous.

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