2011-2017 Buick Regal Back Up Light and Neutral Safety Switch Guide
If your reverse lights have stopped working, this guide will help you diagnose the problem and choose the right replacement switch for your Regal.
- First, check your bulbs and fuses; it might not be the switch.
- You MUST identify if your Regal is automatic or manual to buy the correct part.
- For automatic transmissions, the part is called a Neutral Safety Switch; for manuals, it's a simple Back Up Light Switch.
- Driving without working reverse lights is a safety hazard and can lead to a ticket.
A Note on Buick Regal Model Years
While this guide covers the 2007-2016 model years, it's important for owners in North America to know that the Buick Regal was reintroduced starting with the 2011 model year. This article specifically applies to the fifth-generation Regal, sold from 2011 to 2017.
Automatic vs. Manual Transmission: A Critical Difference
Before buying a part, you must know which transmission your Regal has. They use different parts for the same function.
- Automatic Transmission: The back up light switch is part of the larger Neutral Safety Switch (also called a Transmission Range Sensor). This part is more complex and expensive.
- Manual Transmission: Uses a simpler, separate 2-pin Back Up Light Switch. This part is smaller and less expensive.
Ordering the wrong part is a common mistake. Double-check your vehicle's transmission type before purchasing.
Symptoms of a Failing Back Up Light Switch
A bad back up light switch can be a safety hazard. The most common sign is when your reverse lights stop working, but there are other symptoms to watch for. Before assuming the switch is bad, always check for burnt-out bulbs and blown fuses first, as these are simpler and cheaper fixes.
- Reverse Lights Don't Turn On: This is the most obvious symptom. When you shift into reverse, the lights at the back of the car do not illuminate at all. 🎬 Watch this step-by-step DIY guide to fixing non-working reverse lights.
- Intermittent Reverse Lights: The lights may flicker or only work sometimes. This can be caused by worn internal contacts inside the switch.
- Reverse Lights Stay On: If the switch fails in the 'on' position, your reverse lights may stay lit even when you are not in reverse. This can confuse other drivers and will burn out your bulbs quickly.
- Engine Won't Start (Automatic Only): If the neutral safety switch part of the circuit fails, it can prevent your car from starting in Park or Neutral. You may find it starts in one gear but not the other. 🎬 See how to diagnose and replace a faulty neutral safety switch.
Pro Tip: Check Fuses and Bulbs First
Save yourself time and money by checking the easiest things first. A burnt-out bulb or a blown fuse in the fuse box can cause your reverse lights to fail. Consult your owner's manual to find the location of the fuse for the backup lamps.
Choosing the Right Aftermarket Back Up Light Switch
For the 2011-2017 Buick Regal, you have a few good aftermarket options. The quality can vary, so it's helpful to understand the brands.
Brand Tiers
- Premium Aftermarket (OEM-Equivalent): ACDelco is GM's official parts brand and is considered the original equipment manufacturer or equivalent. Choosing ACDelco provides the highest likelihood of a perfect fit, proper function, and long-term reliability, feeling just like the original part.
- Standard Aftermarket: Brands like Facet and Vemo offer a balance of quality and value. Facet is an established Italian parts maker with a generally acceptable reputation for sensors. These brands are a reliable choice for a cost-effective repair.
Expected Costs for Replacement
The cost to replace a back up light switch depends on your transmission type and whether you do it yourself or use a repair shop. The prices below are estimates for the more common automatic transmission's Neutral Safety Switch.
| Part/Service | Estimated Cost |
|---|---|
| New OEM (GM Genuine) Part | $70 - $120 |
| New Aftermarket Part | $13.95 - $38.64 |
| Shop Labor | $98 - $143 |
| Total Professional Replacement | $112 - $182 |
Frequently Asked Questions
Can I replace the back up light switch myself?
Yes, this is a DIY-feasible repair for many home mechanics. The switch is located on the transmission. The job typically involves safely lifting the vehicle, disconnecting the electrical connector, unscrewing the old switch, and installing the new one. The difficulty is low for the simple 2-pin switch on manual models and moderate for the neutral safety switch on automatic models.
🎬 Watch: How to replace a transmission range sensor without special tools.Are working reverse lights a legal requirement?
Yes. Functional reverse lights are a safety requirement in all states. They signal your intent to back up to other drivers and pedestrians. Driving without them can be dangerous and may get you a traffic ticket.
Were there any recalls for the Buick Regal back up light switch?
No, there have been no specific safety recalls or widespread Technical Service Bulletins (TSBs) issued for the back up light switch or neutral safety switch on the 2011-2017 Buick Regal. However, recalls were issued for other electrical issues on some model years, including wiring problems for the power seats and turn signals.
Should I buy an OEM or Aftermarket switch?
For a sensor like this, an OEM-equivalent brand like ACDelco is often the safest bet for guaranteed compatibility and longevity. However, quality aftermarket brands like Facet and Vemo offer a perfectly good alternative at a lower price point for a reliable repair.
Helpful Videos
Technical Specifications
OEM Part Numbers: 55583570 1239109 1239125 12846100 12846101 24230719
Varies by transmission type. Manual transmission uses a 2-pin switch. Automatic transmission uses a multi-pin Neutral Safety Switch / Transmission Range Sensor.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Buick Regal:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- A Note on Buick Regal Model Years
- Automatic vs. Manual Transmission: A Critical Difference
- Symptoms of a Failing Back Up Light Switch
- Pro Tip: Check Fuses and Bulbs First
- Choosing the Right Aftermarket Back Up Light Switch
- Brand Tiers
- Expected Costs for Replacement
- Frequently Asked Questions
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