Airbag actuator diagnosis

I just saw that there's a "actuator diagnosis" for the airbags. What does that do? Will my airbags then come and visit me?

Yep - they're just taking a quick look outside to test if they work .
Airbags deploy only once per sentence.

No, the test will evaluate the procedure during crash simulations.
Okay, here's the translation:

'So, you set the interior lights to activate with the door contact, enable the vehicle locking feature via the interior button (like an auto-lock function), and then start the actuator diagnosis while the doors are closed.'

All doors will automatically open, the interior light will turn on, the hazard lights will activate, and an error message will be generated (door opening due to a crash signal).


Be careful with the a4 Cabrio; the rollover bars in the rear pop out of the trim (nothing should be on top of them or obstructing the flaps), and it makes quite a loud noise. Don't worry, they can be 'reset,' but this function can only be used a limited number of times before the entire unit needs to be replaced.

Okay, so the control unit (ECU) was not functioning properly after the actuator diagnosis until the ignition was turned off and then on again.

Generally, it is not recommended unless you specifically want to test a function. In current models (e.g., Touareg), the actuator diagnosis can also lead to battery disconnection, which may then require special tools and considerable effort.