Skip the auto shop - Our mechanics make house calls

Q: SRS System and Seatbelt (Airbag deployed/replaced)

asked by on

I have a 2012 Mercedes e350 coupe (blue efficiency). The driver steering wheel and knee airbags deployed along with the seatbelt pretensioners for the driver and rear seat. With the battery still disconnected I have replaced the airbags and want to know if reconnecting the power would cause the airbags to re-deploy? (I replaced the front impact sensors on the reinforcement bar). I am also curious how to remove the drivers seatbelt. I cannot figure out how to remove the rear-seat side paneling. Thank you.

All airbags are a one-time use feature and will always have to be replaced after deployment. With safety features as these, I strongly recommend disconnecting the battery before working on the airbag system.

While I do recommend having a dealership perform this repair, if you prefer to do this on your own, disconnect the battery and remove it from the vehicle. With the battery removed from the vehicle, use a jumper wire to connect the positive and negative cables on your vehicle. Doing this will drain all the capacitors in your vehicle so you can safely service the airbag system. Leave the jumper wire in place for at least 30 minutes and then remove when you are ready to work on the electrical system.

Again, I highly recommend having the dealership service your airbag system for you. They have certified technicians specifically trained to ensure that your airbag system is installed correctly and operating safely.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do I use the intermittent wipers?

The intermittent windshield wipers are a feature that allows you to control the speed of the windshield wipers. Here’s how to use them: 1. Push the windshield wiper lever down one notch to the INT position. This will turn the...

Q: Airbag light stayed on after battery change

The light might have came on before you disconnected the bad battery due to low voltage to the system. Once you put in the new battery, the system still has a stored code and the light will be on until...

Q: There was too much oil put in my car it got drove about mile maybe before sucked back out it is smoking a lot how long will it con

The 2012 is sensitive about how much oil is in the engine. If it has been overfilled, you probably have oil in the exhaust system and the crankcase vent system. The first thing you need to do is make sure...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...