Elon Musk's automaker faces a widening probe concerning alleged safety defects with the company's flush-mounted, electronic door handles.

Elon Musk's automaker faces a widening probe concerning alleged safety defects with the company's flush-mounted, electronic door handles.

The lawsuit, filed on Friday, alleges lithium-ion battery pack in Model S caused the electronic door systems to fail.

Federal regulators ordered Tesla to comply with an investigation into possibly defective door handles that reportedly led to trapped passengers.