Yes, a car can absolutely get shorted out by a lightning storm. While the vehicle's metal frame acts as a protective Faraday cage, directing the electrical current around the occupants and into the ground, the massive surge of electricity can still overwhelm and damage sensitive electronic components. The key is that the primary safety feature protects you, not necessarily all the car's advanced systems.
A direct strike is the most severe event. The current, which can exceed 100,000 amps, seeks the path of least resistance to the ground, often jumping through or arcing across electronic control units (ECUs), wiring harnesses, and sensors. This can fry the infotainment system, engine control module, or power steering assist.
More common is damage from a nearby ground strike. The electrical energy travels through the ground and can enter the car through its tires, which are not perfect insulators against such a high-voltage event. This can cause similar, though potentially less extensive, damage to electronics.
The table below outlines common components at risk and typical symptoms:
| Affected Component | Symptoms After a Strike |
|---|
| Engine Control Module (ECM) | Car won't start, check engine light, rough idling |
| Infotainment/Stereo System | Complete failure, distorted sound, blank screen |
| Power Accessories | Windows, locks, or seats stop working |
| Battery/Alternator | Battery drain, alternator failure, warning lights |
| Sensors (ABS, Airbag) | Multiple dashboard warning lights illuminated |
If you're caught in a storm, the safest place to be is inside your car with the windows fully closed. Avoid touching any metal parts connected to the frame. After a suspected strike, have the vehicle inspected by a professional mechanic who can run diagnostic tests on all ECUs. Comprehensive insurance typically covers lightning strike damage.
