INFINITI QX70 Brake Lights Aren't Working

Common Causes of Brake Light Failures in Your INFINITI QX70 and How to Fix Them

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
35% chance it's the
Brake Light Bulb
0%
25% chance it's the
Brake Light Fuse
0%
20% chance it's the
Brake Pedal Switch
0%
20% chance it's
Something else
The most common reasons a INFINITI QX70 brake lights aren't working are a bad brake light bulb, blown brake light fuse, or a faulty brake pedal switch.
  • Brake Light Bulb: A burnt-out brake light bulb can prevent the brake lights from illuminating, compromising safety and signaling to other drivers.
  • Brake Light Fuse: A blown brake light fuse can prevent the brake lights from functioning, often due to a short circuit or overload in the electrical system.
  • Brake Pedal Switch: A faulty brake pedal switch can prevent the brake lights from functioning properly and may affect the operation of the cruise control system.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

Troubleshooting Brake Light Issues in an INFINITI QX70

When troubleshooting brake light issues in your INFINITI QX70, start with the most straightforward solutions. Begin by checking the brake light bulbs; if they are dim or burnt out, replacing them is a quick fix that can resolve the problem. Next, inspect the brake light socket for any signs of corrosion or damage, as this can also affect functionality. If the bulbs are functioning correctly, consider the possibility of electrical issues, especially if you notice other symptoms like intermittent Bluetooth connectivity. In such cases, a thorough examination of the vehicle's electrical system may be necessary. Additionally, pay attention to the ABS sensor; a malfunction here can trigger the brake light and compromise your vehicle's safety features. If your brake lights remain illuminated when not in use, this could indicate a stuck brake pedal or a faulty switch, which may require more in-depth troubleshooting. Lastly, if the traction control light is also on, it may suggest a related issue that warrants further investigation. By following this diagnostic approach, you can effectively identify and resolve brake light issues, ensuring your vehicle remains safe and roadworthy.

How to Diagnose and Fix Brake Light Issues in an INFINITI QX70?

When diagnosing and fixing brake light issues in your INFINITI QX70, it's essential to understand the common problems that can arise within the braking system. One frequent issue is a malfunctioning brake light switch, which can prevent the lights from illuminating properly. Additionally, low brake fluid levels can trigger warning lights, indicating that a simple top-off might resolve the issue. It's also crucial to check the brake fuse, as a blown fuse can lead to electrical malfunctions affecting the brake lights. Corroded or damaged wiring connections can further complicate matters, so inspecting these for any signs of wear is vital. Lastly, ensure that the parking brake is fully released, as an engaged switch can inadvertently activate the brake warning light. By being aware of these common problems, you can systematically address each potential cause, leading to a successful diagnosis and repair of your brake light issues.

How to Fix Non-Working Brake Lights in an INFINITI QX70?

When dealing with non-working brake lights in your INFINITI QX70, it is crucial to act swiftly, as neglecting this issue can lead to serious safety hazards on the road. Brake lights are essential for signaling your intentions to other drivers, and if they fail, you risk being involved in an accident. Start by checking the brake light bulbs, as burned-out bulbs are a common culprit. If the bulbs are functioning, inspect the brake light fuse, as a blown fuse can interrupt the electrical circuit. Additionally, the brake light switch should be tested, as a malfunctioning switch can prevent the lights from activating. It’s also wise to verify the overall electrical system for any underlying issues that could affect the brake lights. Don’t forget to check the brake fluid level, as low fluid can impact the brake system's performance. Addressing these components not only ensures your safety but also helps avoid more significant repairs down the line. Taking the time to troubleshoot and resolve brake light issues promptly can save you from potential accidents and costly repairs, making it a vital DIY task for any INFINITI QX70 owner.

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