Volvo XC70 Brake Light Switch Guide for 2009-2016 Models
Fix common problems like brake light failure, cruise control issues, and your shifter getting stuck in park.
- A bad brake light switch affects the brake lights, cruise control, and ability to shift out of park.
- Symptoms can include brake lights stuck on or off, cruise control not working, and a shifter stuck in park.
- For this part, quality aftermarket brands like Facet and Standard Ignition offer a reliable, cost-effective alternative to OEM.
- This is an easy and inexpensive DIY repair that most owners can complete in under 30 minutes.
Is Your Volvo XC70 Showing Signs of a Bad Brake Light Switch?
A failing brake light switch, also known as a stop lamp switch, is a common issue that can be frustrating to diagnose if you don't know the signs. Because this switch communicates with multiple systems in your XC70, its failure can cause more than just problems with the brake lights. Recognizing the symptoms is the first step to a quick and affordable repair.
Common Symptoms of Failure
- No Brake Lights: The most serious symptom. The lights do not come on when you press the brake pedal, which is a major safety hazard.
- Brake Lights Stay On: The switch can fail in the 'on' position, leaving your brake lights illuminated even when the car is off. This will drain your battery.
- Cruise Control Won't Work: The cruise control system will not engage or will cut out unexpectedly. This is because the car thinks the brakes are being applied.
- Shifter Stuck in Park: You may be unable to move the gear selector out of the Park position because the shift interlock solenoid doesn't get the signal that the brake is pressed.
- Dashboard Warning Messages: You might see a "Check Stop Lamp" or similar warning light on your instrument cluster.
Known Issues & Recalls
Our search of the National Highway Traffic Safety Administration (NHTSA) database found no specific recalls for the brake light switch on the 2009-2016 Volvo XC70. While some owners confuse symptoms with issues related to the Rear Electronic Module (REM) or relays, the brake light switch itself is a frequent and simple point of failure. Always check simple components like bulbs and fuses before replacing more complex modules.
Choosing the Right Aftermarket Brake Light Switch
For a part like the brake light switch, an aftermarket replacement is often a practical and cost-effective choice. The technology is not overly complex, and quality aftermarket brands produce reliable switches that meet or exceed original specifications. The key is choosing a reputable brand.
- Tier 1 (Good): Standard Ignition (SMP) & Facet. Both are established brands known for producing quality replacement parts. Facet is a European company with a long history of making OE-equivalent components. Standard Ignition is a trusted name in the North American aftermarket. Either of these brands is a solid choice for a dependable repair.
- Tier 2 (Acceptable): VNE. This brand is a more budget-friendly option. While it may not have the long-standing reputation of Facet or Standard Ignition, it can be a suitable choice if cost is the primary concern for this simple repair.
There is little functional difference between a quality aftermarket switch and the OEM part for this specific component. Given the significant cost savings, a reputable aftermarket switch is the recommended path for most owners.
Pro Tip: Installation
Replacing the brake light switch is a straightforward DIY job that can be done in under 30 minutes with basic tools. The switch is located above the brake pedal. The process involves disconnecting the electrical connector, rotating the old switch to remove it, and then installing the new one in the reverse order. Newer switches are often self-adjusting; you will hear a click as the pedal returns to its resting position, which sets the switch plunger correctly.
Cost of Replacing a 2009-2016 Volvo XC70 Brake Light Switch
| Part Type | Part Cost | Labor Cost (Shop) | Total Installed Cost |
|---|---|---|---|
| New Aftermarket | $21 - $30 | $75 - $150 | $96 - $180 |
| New OEM | $60 - $90 | $75 - $150 | $135 - $240 |
| DIY (Aftermarket Part) | $21 - $30 | $0 | $21 - $30 |
Cost estimates are approximate and can vary based on your location and the specific repair shop.
Frequently Asked Questions
Can I still drive my XC70 with a bad brake light switch?
No. If your brake lights are not working, it is not safe or legal to drive. If the switch is causing other issues like a stuck shifter, you may not be able to move the vehicle at all. This repair should be done immediately.
How do I know if it's the switch, a fuse, or the bulbs?
Always start with the simplest checks. First, have someone confirm if ALL brake lights are out. If only one is out, it's a bulb. If all are out, check the brake light fuse in your vehicle's fuse box. If the fuse and bulbs are good, the brake light switch is the next most likely culprit.
Do I need to disconnect the battery to replace the switch?
It is always a good safety practice to disconnect the negative battery terminal before working on any part of your vehicle's electrical system to prevent short circuits.
What is the difference between a brake light switch and a brake pedal position sensor?
On many modern vehicles, these terms are used for the same part. The component acts as a switch to complete a circuit for the lights but also as a sensor to provide pedal position data to the car's computers for systems like cruise control and ABS.
Technical Specifications
OEM Part Numbers: 31428303 9496967
Located on the brake pedal support bracket, this is a 4-pin electro-mechanical switch that functions as a sensor for multiple vehicle systems.
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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.
- Volvo XC70:
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- Is Your Volvo XC70 Showing Signs of a Bad Brake Light Switch?
- Common Symptoms of Failure
- Known Issues & Recalls
- Choosing the Right Aftermarket Brake Light Switch
- Pro Tip: Installation
- Cost of Replacing a 2009-2016 Volvo XC70 Brake Light Switch
- Frequently Asked Questions
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