Mercedes W205 SRS Warning light on and how to fix

A restraint system defective 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.


What does the airbag 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 light is on, possibly because one of the above components is at fault.
Next, we will guide you on how to fix the Supplemental Restraint System warning light on below

Software and device needed

First of all, you need specialized coding software for Mercedes such as Vediamo or DTS Monaco and especially the C4 device to connect the software on the computer with the car.
Are you looking for a dedicated laptop for automotive repair? Contact us right here!

Step by Step to Fixing SRS warning light

After you have all the software and connected devices. The steps to fix the SRS warning light on
Step 1: Connect the computer to the vehicle through the C4 device.
Step 2: Start Xentry software and identify the control box name by Xentry: the ORCE box.
Step 3: Open DTS Monaco software and select ORC22. 
Step 4: Run the flash file SMR (programming) again.
Step 5: Select the suitable coding option in Xentry.
Step 6: Delete the error and reset the hardware and then check the results after fixing the error.

You can refer to the video tutorial below:

These are 6 steps to fix the SRS Warning light on that we have shared with you.

If the dashboard still shows a warning light after fixing, you may make mistake at some steps. The best way is to contact our technicians to quickly review and correct the mistake to avoid bad consequences. You can contact us directly via website or whatsapp: +84 388951999. We will assist you to solve the problem as quickly as possible.

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