Tesla Cybercab Emergency Guide Reveals Hidden Cabin Secrets And Cut Loops

The official emergency response documentation for the Tesla Cybercab provides a comprehensive look at the autonomous vehicle’s specialized structural design, occupant restraint configurations, and high-voltage isolation safeguards.

Structural Integrity and High-Strength Zones

To protect passengers in the absence of traditional crumple zones managed by standard engine bays, the cabin is surrounded by a rigid safety cell. The A-pillars, B-pillars, and inner door rings are constructed from ultra-high-strength reinforced steel. The overhead roof rails utilize high-strength steel, while the remainder of the structural frame consists of varying grades of steel and aluminum.

A critical structural detail involves the cabin floor, which doubles as the upper enclosure for the 400-volt lithium-ion battery pack. There is no traditional separate floor pan; instead, a thin layer of high-strength steel separates the occupants from the battery cells. Because of this, first responders are warned never to exert downward force inside the cabin or use puncture tools on the floor, as this could directly breach the battery enclosure.

Occupant Restraint and Airbag Infrastructure

The vehicle features a comprehensive Supplemental Restraint System (SRS) managed by a central Restraint Control Module (RCM) located beneath the center console. Airbag protection includes:

• Front airbags
• Knee airbags
• Curtain airbags
• Both inner and outer seat-mounted side airbags

The seat belts are equipped with traditional pyrotechnic pre-tensioners located at the base of the B-pillars, alongside motorized seat belt links that automatically tighten to eliminate slack in anticipation of a collision. Notably, the seat belts feature integrated infrared webbing. This material is designed to show up as a distinct hot spot under thermal imaging or infrared cameras, allowing emergency crews to quickly identify and locate occupants in dark or smoke-filled conditions.

Active Hood Pedestrian Protection

For external safety, the vehicle is equipped with an Active Hood system to mitigate pedestrian injuries during a forward collision. Operating at deployment speeds between 15 and 32 mph (25 to 52 km/h), the system utilizes pyrotechnic actuators positioned near the base of the windshield. Upon impact detection, these actuators instantly lift the rear portion of the hood, increasing the mechanical clearance between the flexible outer sheet metal and the rigid low-voltage components underneath.

High-Voltage Power Isolation and Redundancies

The high-voltage system is engineered to automatically isolate power to the battery pack whenever the airbags deploy, which simultaneously triggers a pyrotechnic fuse within the high-voltage circuit.

For manual de-energization, the vehicle includes two distinct First Responder Cut Loops that disconnect the low-voltage power supplying the high-voltage contactors, forcing them into an open, safe state:

• Primary Cut Loop: Located under the front hood on the passenger side, accessible via an external 48-volt jump-start connector if the vehicle completely loses auxiliary power.
• Secondary Cut Loop: Located inside the cabin, tucked behind the interior trim of the passenger-side B-pillar as a backup if the front of the vehicle is inaccessible.

Once a cut loop is severed, the high-voltage circuit requires up to two full minutes to completely de-energize, while the RCM maintains an internal power reserve for approximately 10 seconds post-disconnect. Additionally, cutting the 48-volt low-voltage battery cable alone will not shut down the vehicle’s secondary systems, as the vehicle features internal power redundancies that allow the high-voltage pack to continue supporting low-voltage functions unless a cut loop is broken.

The guide reveals that the vehicle utilizes a charge port located on the rear bumper below the trunk lid. If a charging cable becomes locked or damaged after an accident, responders can access a manual release cable by removing the liner of the rear driver-side wheel well.