ABS and Brake Warning Lights On - 2017 Infiniti Q60

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Mark S. · rep 0 · May 22, 5:05 AM · 1 replies · solved · Question

Vehicle: 2017 Infiniti Q60 Premium

Hey everyone,

I've got a concerning issue with my 2017 Infiniti Q60 Premium. Both the ABS warning light and the general brake warning light (the one with the exclamation mark) came on simultaneously on my dashboard yesterday. They've stayed on since.

The car seems to be driving okay, but I'm worried about the braking system. I checked the brake fluid reservoir, and it looks to be at the correct level. I haven't noticed any strange noises or changes in braking performance, but I'm hesitant to drive it much.

Has anyone experienced this with their Q60? What could be causing both lights to come on? Is it safe to drive to a mechanic?

Thanks for your help!

✓ Accepted solution

ClearTheCode Admin

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ClearTheCode admin answer:

When both the ABS and general brake warning lights illuminate on your 2017 Infiniti Q60, it indicates a significant issue within your braking system that requires immediate attention. While the car might seem to drive normally, critical safety features could be compromised.

Common Causes:

  1. Faulty Wheel Speed Sensor: This is a very common culprit. Each wheel has a sensor that monitors its rotational speed for the ABS system. If one fails, the ABS system can't function correctly, triggering both lights. Common OBD codes include C0031-C0052 (depending on which wheel sensor is faulty).
  2. Low Brake Fluid Level: Although you checked, a very slight drop or a faulty fluid level sensor could trigger the general brake warning light, which can sometimes be accompanied by the ABS light if the system detects an overall issue.
  3. ABS Module Failure: Less common but possible, the ABS control module itself can fail, leading to system errors and warning lights.
  4. Wiring Issues: Damaged wiring or connectors to the wheel speed sensors or ABS module can also cause these lights to illuminate.
  5. Master Cylinder or Brake Booster Issues: While these typically cause noticeable braking performance issues, severe problems could trigger warning lights.

Recommended Steps:

  1. Check Brake Fluid (Again): Double-check the brake fluid level. If it's low, top it off with the correct fluid type, but also investigate why it was low (e.g., a leak).
  2. Read OBD Codes: The most crucial step is to get the vehicle scanned for diagnostic trouble codes (DTCs). A standard OBD-II scanner might not read ABS-specific codes, so a more advanced scanner or a visit to a shop is usually needed. The codes will pinpoint the exact area of concern.

When to See a Shop:

It is not recommended to drive your car extensively with both ABS and brake warning lights on. While your regular brakes might still work, the ABS system (which prevents wheel lock-up during hard braking) is likely disabled. This significantly impacts your vehicle's ability to stop safely, especially in emergency situations or on slippery roads. Drive directly to a trusted mechanic or have the car towed. A professional can accurately diagnose the issue by reading the specific ABS codes and performing necessary repairs to restore full braking system functionality.