The SOS button in your car is an emergency assistance system that connects you directly to a live agent at an emergency response center. When pressed, it can summon help to your exact location after a crash or during a medical emergency. This feature is part of a larger suite of connected vehicle services, typically powered by an embedded telematics control unit that uses a cellular connection and GPS.
Here’s how it works: In a collision where airbags deploy, many systems automatically trigger an SOS alert, even if you're unable to press the button. If you need help manually—like for a medical issue or witnessing an accident—you press and hold the SOS button for a few seconds. This initiates a two-way voice call with a response specialist who can dispatch emergency services, such as police, fire, or an ambulance, to your GPS coordinates.
It's important to distinguish the SOS button from other similar buttons, often labeled "i" (Information) or featuring a road service icon. The SOS is strictly for life-threatening emergencies.
| Feature | SOS Button | Information Button ("i") | Roadside Assistance Button |
|---|
| Primary Purpose | Life-threatening emergencies (crash, medical) | Non-emergency vehicle support | Mechanical breakdowns (flat tire, dead battery) |
| Connection | Emergency response center | Manufacturer's concierge | Roadside service provider |
| Typical Use Case | Airbag deployment, serious injury | Questions about vehicle features, directions | Towing, lock-out service, jump-start |
| Activation | Automatic (crash) or Manual (press & hold) | Manual press | Manual press |
| Cost | No additional cost for emergency call | Often part of a paid subscription plan | Often part of a paid subscription plan |
Only use the SOS button for genuine emergencies to avoid tying up critical resources. For test purposes, consult your owner's manual, as many systems have a specific non-emergency test mode.
