How To Turn Off Parking Lights

Having trouble turning off your parking lights? It’s a common frustration that can drain your battery and leave you stranded. The good news is that usually, it's a simple fix. In this article, we’ll walk you through the symptoms, causes, solutions, and potential costs associated with this annoying problem. Getting your parking lights working correctly is vital for safety and to prevent a dead battery, ensuring your car is ready to go when you are.

Symptoms of Parking Lights Sticking On

Identifying the symptoms is the first step toward resolving any automotive issue. Here are the telltale signs that your parking lights are stuck on:

• Parking lights remain illuminated even after the ignition is turned off and the key is removed. This is the most obvious indicator.
• Dimming or flickering headlights or interior lights. This can indicate a drain on the battery caused by the continuously illuminated parking lights.
• Dead battery, especially after the car has been parked for an extended period (overnight or longer). This is a severe consequence of persistent power drain.
• The parking light indicator on the dashboard remains lit even when the parking lights should be off. This might be a clue, but it is not always an accurate indicator and can also be related to unrelated sensor issues.
• Unusual electrical noises coming from the car when it's off, potentially related to the power circuit feeding the lights.
• Noticeably warm light lenses. If your parking lights use incandescent bulbs, you may notice the lenses becoming unusually warm when the lights are stuck on, especially if left on for a long time.

Understanding the Root Cause

Several factors can cause your parking lights to remain illuminated when they shouldn't. Let’s delve into the most common culprits:

• Faulty Light Switch: The most frequent cause is a malfunctioning headlight/parking light switch. This switch controls the flow of electricity to the lights, and if it's defective, it may not properly cut off power when turned to the "off" position. The contacts inside the switch can become worn, corroded, or simply break, leading to this problem.
• Sticking Relay: Relays are electrical switches that use a small current to control a larger current. A relay controls the parking lights circuit in many vehicles. If the relay contacts become stuck in the "on" position, the parking lights will remain on even when the switch is off.
• Wiring Issues: Damaged or shorted wiring can cause the parking lights to stay on. This can occur due to insulation damage, corrosion, or improper connections. Animals chewing on wires is a surprisingly common reason.
• Faulty Body Control Module (BCM): The BCM controls many of the vehicle's electrical functions, including the lighting system. While less common, a malfunctioning BCM can sometimes cause the parking lights to stay on. This is more prevalent in newer vehicles with more sophisticated electronic systems.
• Combination Switch Issues: Some vehicles use a combination switch on the steering column for various functions like turn signals, headlights, and wipers. A fault within this switch assembly could inadvertently activate the parking lights circuit.
• Aftermarket Accessories: Improperly installed aftermarket accessories, such as remote starters or security systems, can sometimes interfere with the vehicle's electrical system and cause the parking lights to stay on.

Consequences of Ignoring the Problem

Leaving your parking lights on indefinitely might seem like a minor inconvenience, but ignoring the issue can lead to several serious problems:

• Dead Battery: This is the most immediate and common consequence. The constant drain from the parking lights will deplete the battery, leaving you stranded with a vehicle that won't start.
• Reduced Battery Lifespan: Repeatedly draining the battery can significantly shorten its lifespan, requiring you to replace it sooner than expected. Deep discharging a battery is very harmful.
• Damage to Electrical Components: A persistent electrical fault can potentially damage other electrical components in your vehicle, leading to more costly repairs.
• Safety Hazard: While the parking lights themselves provide a small amount of visibility, they can also attract unwanted attention, especially at night, potentially increasing the risk of theft or vandalism.

Recommended Fixes

The best approach to resolving this issue depends on the root cause. Here’s a breakdown of common fixes:

• Check and Replace the Light Switch: This is often the first and easiest step. Inspect the switch for any visible damage or corrosion. Use a multimeter to test the switch's continuity to ensure it's functioning correctly. Replacement switches are readily available and relatively inexpensive. Replacing a faulty switch is usually the first line of defense.
• Inspect and Replace the Relay: Locate the parking light relay in your vehicle's fuse box. You can often test a relay by swapping it with an identical relay from another circuit (e.g., the horn relay). If the problem moves to the circuit of the swapped relay, the original relay is faulty and needs replacement. Relays are inexpensive and easy to replace.
• Inspect and Repair Wiring: Carefully inspect the wiring harness connected to the parking lights and the light switch. Look for any signs of damage, such as frayed wires, cracked insulation, or corrosion. Repair or replace any damaged wiring as needed. Use proper wiring techniques and heat shrink tubing for lasting repairs.
• Consult a Professional for BCM Issues: If you suspect a faulty BCM, it's best to consult a qualified mechanic or automotive electrician. BCM diagnosis and repair often require specialized tools and knowledge. Diagnosing a BCM problem can be complex and requires professional-grade diagnostic equipment.
• Check Aftermarket Accessories: If you have any aftermarket accessories installed, disconnect them temporarily to see if they are causing the issue. If the parking lights turn off after disconnecting an accessory, the accessory or its installation is likely the culprit.
• Combination Switch Replacement: If your vehicle has a combination switch and you suspect it is the cause, it should be inspected and likely replaced by a professional, as it often involves removing the steering wheel and working with airbag components.

Cost Estimates and Shop Advice

The cost of fixing the parking light issue can vary depending on the cause and whether you choose to DIY or take your vehicle to a shop.

• Light Switch Replacement: DIY: $20-$50 (for the switch). Professional: $80-$200 (including labor).
• Relay Replacement: DIY: $5-$20 (for the relay). Professional: $50-$100 (including labor).
• Wiring Repair: DIY: $10-$30 (for wiring supplies). Professional: $100-$300 (depending on the extent of the damage).
• BCM Diagnosis and Repair: Professional: $100-$200 (for diagnosis) + $300-$1000+ (for BCM replacement and programming).
• Combination Switch Replacement: Professional: $200 - $500 (including parts and labor).

Shop Advice:

• Get a Diagnosis: If you're unsure of the cause, it's best to take your vehicle to a reputable mechanic for a diagnosis. A proper diagnosis can save you time and money by pinpointing the exact problem.
• Ask for a Written Estimate: Before authorizing any repairs, ask for a written estimate that includes the cost of parts and labor.
• Check Online Reviews: Research local mechanics and read online reviews to find a trustworthy and experienced shop.
• Consider a Second Opinion: If you're quoted a high price for BCM repair or replacement, consider getting a second opinion from another mechanic.

Technical Service Bulletins (TSBs) and Community Data:

While specific TSBs directly addressing parking lights staying on are relatively rare, it's always a good idea to check for any TSBs related to your vehicle's electrical system or lighting. You can usually find TSB information online or through a reputable mechanic. Many online automotive forums and communities contain valuable information from other owners who have experienced similar problems. Searching these forums can provide insights into common issues and potential solutions specific to your vehicle's make and model. For example, certain Honda models from the early 2000s have been known to have issues with the headlight switch causing similar issues, and information about this can be found readily online.

By following these steps, you can effectively diagnose and resolve the issue of your parking lights staying on, ensuring your vehicle is safe and your battery remains charged.