Volvo S80 Brake Light Switch Guide for 2008-2016 Models
If your S80's brake lights, cruise control, or gear shifter are acting up, the brake light switch is a likely culprit.
- A bad brake light switch affects more than just lights; it can disable cruise control and trap the shifter in Park.
- This is a simple, low-cost DIY repair that most owners can complete in under an hour with basic tools.
- There are no specific recalls for this part, but it is a common failure item on the 2008-2016 S80.
- Aftermarket brands like VNE and Standard Ignition offer reliable alternatives to the more expensive OEM part.
Is Your Volvo S80 Brake Light Switch Failing?
A failing brake light switch can be more than an annoyance; it's a critical safety issue. Because this switch communicates with multiple systems in your S80, you might notice several strange problems at once. Recognizing the signs early can save you from a roadside headache or a potential accident.
Common Symptoms of a Bad Brake Light Switch
- Brake Lights Don't Work or Get Stuck On: The most obvious sign is your brake lights not lighting up when you press the pedal, or staying on constantly and draining your battery.
- "Check Stop Lamp" Message: Your dashboard may display a "Check Stop Lamp" warning, which points directly to an issue in the brake light circuit.
- Cruise Control Malfunctions: The cruise control may refuse to turn on or might shut off by itself while you're driving.
- Stuck in Park: As a safety feature, your S80 requires a signal that the brake is pressed before it will allow the gear shifter to move out of Park. A bad switch prevents this signal.
- ABS or Stability Control Lights: A faulty switch can sometimes trigger the ABS or traction control warning lights on your dash.
No Recalls, But a Known Issue
While the National Highway Traffic Safety Administration (NHTSA) has not issued any specific recalls for the brake light switch on the 2008-2016 Volvo S80, failure of this part is a commonly reported issue among owners. Always check for active recalls on your specific vehicle, but know that this particular part is a frequent wear-and-tear replacement item.
Choosing the Right Aftermarket Brake Light Switch
When replacing the brake light switch, you don't necessarily need to pay dealership prices for an OEM part. Several quality aftermarket brands offer reliable and affordable alternatives. Here’s a breakdown of the available options.
Brand Quality Tiers
- Tier 1 - OE Equivalent (VNE): VNE is known for producing high-quality parts for European vehicles, often as the original equipment manufacturer for the car brand itself. Choosing VNE is the closest you can get to OEM quality, sometimes without the branded box and higher price tag.
- Tier 2 - Trusted Aftermarket (Standard Ignition): Standard Ignition (also known as Standard Motor Products) has a long-standing reputation among professional mechanics for making quality replacement parts that fit and perform correctly. Reviews for their switches are consistently positive, making them a reliable, mid-range choice.
- Tier 3 - Budget-Friendly (Facet): Facet offers a more budget-oriented option. While they state their parts are made to OE specifications, customer reviews can be mixed, with some reporting fitment issues on other vehicle models. It can be a good choice if budget is the primary concern, but verify the fit for your S80.
Pro Tip: Check for a Two-Switch System
Some Volvo S80 models from this era have two separate sensors on the brake pedal assembly: a brake light switch and a brake pedal travel sensor. If you are experiencing issues, it's wise to inspect both. The OEM part numbers for these are often 30773936 (switch) and 30773935 (sensor).
Cost of Replacing Your Brake Light Switch
Replacing the brake light switch is an inexpensive repair. The part itself is affordable, and the labor is minimal for a professional mechanic.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Part | $21.44 - $29.13 |
| Shop Labor | $41 - $60 |
| Total Estimated Cost (Aftermarket) | $62 - $89 |
Frequently Asked Questions (FAQ)
Can I replace the brake light switch myself?
Yes, this is a very DIY-friendly job. The switch is located above the brake pedal under the dashboard. The process involves removing the lower dash trim panel (usually held by a few Torx screws), disconnecting the electrical connector, and twisting the old switch to remove it. The entire job typically takes less than an hour.
Why won't my S80 shift out of park?
The inability to shift out of Park is a classic symptom of a bad brake light switch. The shift interlock safety system needs to receive a signal that the brake pedal is depressed before it will release the shifter. If the switch is broken, that signal is never sent.
What does the 'Check Stop Lamp' message mean on my Volvo?
This warning indicates a fault in the brake light system. While it could be a simple burnt-out bulb, it is often triggered by a malfunctioning brake light switch, fuse, or relay. If your bulbs are fine, the switch is the next logical part to inspect.
Is it safe to drive with a bad brake light switch?
No. Driving without functioning brake lights is extremely dangerous and illegal. It significantly increases your risk of being rear-ended. If you suspect your brake light switch has failed, you should not drive the vehicle until it is repaired.
Technical Specifications
OEM Part Numbers: 30773936 30773935
Located on the brake pedal support bracket. Typically a two-terminal, electro-mechanical switch that operates by the movement of the brake pedal.
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.
- Volvo S80:
- 🛍️ Shop This Part
- Is Your Volvo S80 Brake Light Switch Failing?
- Common Symptoms of a Bad Brake Light Switch
- No Recalls, But a Known Issue
- Choosing the Right Aftermarket Brake Light Switch
- Brand Quality Tiers
- Pro Tip: Check for a Two-Switch System
- Cost of Replacing Your Brake Light Switch
- Frequently Asked Questions (FAQ)
- 🎟️ Get 5% Off