How To Fix A Malfunctioning Volvo "Push Start" Switch

Volvo's push-to-start system is meant to make your driving experience more seamless - no more fumbling for keys, just a tap of the button and you're off. But what happens when your Volvo refuses to start, even with your foot firmly on the brake and the fob in your hand? If your push-to-start switch isn't working properly, you're not alone. This is a common issue in Volvos, especially on models like the XC60, S90, and V60.

Whether you're facing intermittent start failures, complete unresponsiveness, or strange warning messages, let's walk through how to troubleshoot - and fix - a malfunctioning push start system.

What Does the "Push Start" Button Do?

Volvo's push start button - also called the Engine Start/Stop button - works in tandem with the keyless entry system. It communicates with your car's electronic control modules to verify that the key fob is inside the vehicle, the brake is pressed, and all necessary systems are ready for ignition.

When any part of that sequence fails, the button won't work. But the problem isn't always the button itself.

Symptoms of a Malfunctioning Push Start Button

• No crank, no start when pressing the button
• Dashboard lights flicker or flash "Key Not Detected"
• Repeated pressing required before the engine turns over
• Clicking sound but engine doesn't start
• Accessory mode works, but not ignition

Common Causes & Fixes

1. Key Fob Battery Is Dead or Weak

Believe it or not, the most common cause is a dead key fob battery.

Fix:

• Replace the battery in your Volvo key fob. It usually takes a CR2032 battery.
• Try placing the fob directly against the backup reader (often located in the cup holder or near the center console) and press the start button again.

2. Brake Pedal Not Recognized

If the system doesn't sense the brake being pressed, it won't allow the engine to start.

Fix:

• Make sure you are pressing the brake pedal firmly.
• Check the brake light - if it doesn't illuminate when pressed, your brake switch might be faulty and needs replacement.
• Wiggle the brake pedal slightly while pressing and try again.

3. Faulty Push Start Button

Yes, the button itself can go bad due to internal wear or faulty wiring.

Fix:

• You'll need to remove the start/stop button module, which is usually clipped or screwed into the dash.
• Replace with a new OEM Volvo push start button - many are plug-and-play, but may require coding in newer models.
• If you're not confident with disassembly, a technician can replace it in under an hour.

4. Low Vehicle Battery or Voltage Issues

If your car's battery is weak or unstable, the push start system might fail to engage.

Fix:

• Check battery voltage (should be above 12.4 volts).
• If your battery is older than 3-4 years, consider replacing it.
• Clean the terminals to ensure a strong connection.

5. Faulty Start Inhibitor or Immobilizer System

Volvo's anti-theft system may be preventing ignition if it can't verify the key or if the system itself is malfunctioning.

Fix:

• Try using a spare key fob if available.
• Disconnect the car battery for 10 minutes to reset the system.
• If problems persist, a diagnostic scan at a dealership is needed to check for immobilizer errors.

6. Software Glitches

Volvo's complex onboard computers sometimes need a refresh.

Fix:

• Perform a soft reset by locking the car, waiting 10 minutes, then unlocking and trying again.
• Visit a dealer for the latest software update. Many glitches are resolved by updating the car's central control module (CCM).

How To Replace a Faulty Push Start Switch

If you've ruled out the fob, brake switch, and battery, here's how to replace the button:

Tools Needed:

• Plastic trim tools
• Torx driver (T25/T30 depending on model)
• New OEM push start switch

Steps:

1. Disconnect the battery. This prevents any electrical issues or airbag warnings.
2. Remove trim around the start button. Carefully pry up using a trim tool to avoid scratching.
3. Unscrew or unclip the button assembly.
4. Unplug the connector. You'll see a simple wiring harness.
5. Install the new button. Plug it in, secure it in place, and reassemble the trim.
6. Reconnect the battery and test.

Note: In some newer Volvos with Google-based systems, coding the new switch via VIDA (Volvo's diagnostic tool) may be necessary.

When To See a Technician

If your push start system is still acting up after trying the above steps, it could indicate deeper issues like:

• Failing Body Control Module (BCM)
• Faulty keyless entry antenna
• Signal interference from aftermarket devices
• Internal ECM issues

In these cases, your best bet is to visit a certified technician. Volvo Cars Danvers has the diagnostic tools and OEM parts to quickly identify and fix push start system issues. Whether it's a brake sensor or a replacement key fob, their team can get you back on the road without the frustration.

Need professional help or want to schedule a service? Click here to connect with Volvo Cars Danvers and get expert service from Volvo-certified technicians.