How to fix Mercedes W205 SRS Warning light ON

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How to fix the Mercedes W205 SRS Warning light ON

A restraint system is a dangerous error that needs to be fixed immediately. If the center meter displays this error, it means that your airbag system is no longer working in times of emergency. In this article, we will find out about the error of the SRS warning light displayed on the dashboard and how to fix it. Let’s see the details below.

What is an Airbag system?

SRS (Supplemental Restraint System) is an additional system to increase the protection of passengers in the car. It is located in the airbag system on ​​Mercedes-Benz.AirBag is an in-vehicle safety system consisting of inflatable bags in order to limit collisions between passengers and the car’s dashboard and other interior details to avoid injury to them.SRS-warning-light-W205

Structure and working principle of the SRS system

The structure of the car airbag: The car airbag system is made up of 3 main parts: the sensor system, the airbag, and the detonator of the vehicle.

  • The sensor system works when a collision occurs, it will activate the airbag to deploy and help protect the driver and occupants.
  • The detonator has the function of inflating the airbag in the event of a collision
  • Airbags are designed from stretchy fabric capable of deploying in a quick period of time, especially in the event of a collision to protect occupants and limit injuries.

Working principle of SRS malfunctionWhen a collision occurs, the sensor system will work first to transmit a signal to the airbag controller, the detonator will quickly inflate the airbag. The airbag will then deploy quickly.Some notes when using airbagsThe airbag system will help the occupants of the car to limit injuries in the event of a collision, but there are also some notes for users as follows:

  • Do not place objects on the surface of the airbag: In the event of a collision, the airbag will inflate very quickly with great speed, so when placing objects on top, the inertia will fly away, which can cause damage to the occupants. there.
  • Always sit and drive with the correct posture: This is one of the recommendations for drivers to drive safely, correct sitting posture is very important because in the event of a collision, the bag when inflated quickly can cause damage to the vehicle. parts of your body due to the strong force of the airbag deployment.
  • Do not touch the inside of the airbag after it has inflated as the high temperature can lead to burns

Some problems that the SRS warning light system often encounters

The SRS warning light that appears will make it easy for the driver to lose focus while driving, so it will not be safe. You need to understand the cause and problem of this warning. Here are some common problems with this system:

  • The airbag sensor not working
  • Expired airbags
  • Airbags deploy on their own in the absence of a collision
  • The airbag warning light on the dashboard lights up continuously

What does the SRS warning light mean?

Every time we start the car, the Supplemental Restraint System will check a series of following components:

  • Airbag
  • Airbag control unit 
  • Faulty sensor
  • Detonator
  • Seatbelt force limiter

So when the SRS warning light is on, possibly because one of the above components is at fault.If you have a continuous warning light, you can refer to the cause and how to fix it. How to fix SRS Airbags Warning Mercedes W164 (2007) on our website.

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