If you've ever been in a car accident where airbags are deployed, no one should warn you of their explosive strength. The noise they make can be deafening and the dust that comes out with the cloth bag comes everywhere. If any part of your body is in the wrong position when this occurs, severe injuries usually occur. Even if you have been lucky enough not to try it, as most drivers have some knowledge of what airbags are, how they work and how to keep you safe with the correct use of seat belts and seat belts.
But when you look at some driveway technology under the dashboard of a vehicle with an airbag or other interior points, you might wonder if they ever thought about what could happen if they accidentally deployed one or more of these safety devices. While the front airbag units are well insulated in unique locations (in the steering wheel and in the upper right dashboard), other units are not so obvious, making it important to practice some safe repair techniques to avoid disaster.
Almost every automaker uses a system that provides a 12-volt positive power supply to activate the bags, rather than simply completing the circuit by applying a 12-volt negative mass. This reduces the chances of accidentally involving the system, since it would take a real tip to inadvertently feed the bag. For example, probe the wrong wire with an automatic circuit test lamp and you can easily activate any component that uses a ground signal to operate.
These are the other airbags (not frontal) that sometimes surprise DIYers or amateur technicians. Side curtain airbags, for example, are often damaged by someone installing a roof rack that requires drilling into the roof panel for anchoring. This is the reason why car manufacturers no longer offer the possibility of installing a roof rack after the car has left the factory. Seat airbags are also included in this group and are the new warning labels on aftermarket seat covers. Seat covers should never be installed on seats with airbags as they interfere with the deployment of these bags.
Probably the most forgotten explosive unit is the one attached to most of the front seat belts. This power recoiler is activated by crash sensors and uses a cartridge the size of a cartridge case to retract the belt in a fraction of a second to keep the passenger safe. They are located at the bottom of the seatbelt of the seat belt behind a plastic lining panel and their wiring usually flows under the carpet near the door opening area.
To be reasonably safe when working on the cables of any vehicle, the main battery must be disconnected. If your guide has an audio system with anti-theft protection, check the owner's manual to see if specific steps are needed to reactivate it after disconnecting the battery. Some vehicles require the insertion of a security code when the battery is hooked up.