If you have read up on the different things you need to do after an accident, especially if your airbags have deployed, you most likely learned that your SRS airbag module either needed to be completely replaced or simply reset. If you went ahead with the latter option, good for you! The prices at the dealer for a brand new unit are outrageous and it is much more practical—and equally safe—to just have your original module reset. The one thing you may be struggling with, however, is how to replace the SRS airbag module back into your vehicle. For that I am able to help.
Before you begin the re-installation process, make sure all the airbag SRS components such as the air bags, seat belt, clock spring, and impact sensors are initiated and connected properly.
Then, you can begin by disconnecting your battery terminals—negative first and then positive. After that you will be able to bolt down the airbag module into its place.
Once you see that it is secured, connect it to the wire harness and re-attach all the wiring that you disconnected in the initial disassembly process. It is very important that you make sure all wiring from the horn and the radio as well as all the other controls is hooked up properly before you connect the battery again.
You can finally attach the cables back onto your battery once all of these steps have been completed. Connect the positive first, followed by the negative.
If you have a vehicle with a faulty SRS airbag module, you might know that it needs to be replaced. You may be thinking that you do not have enough money to buy a totally new SRS unit at the dealer. Lucky for you, that is okay. There are plenty of instructions online detailing how you can remove the unit from your vehicle and reset it back to factory condition yourself! You just need to have the proper tools and software to do so.
Let me fill you in on the process. First, you should remove the unit from your vehicle. Most likely, it is located underneath the driver seat or the front passenger seat. You can then begin disassembly of the module. You should open up the module and search for the 8-pin SMD EEPROM chip. This is what stores all the crash data. You then need to solder some 32-gauge hookup wire to connect the airbag module to a serial port EEPROM reader. After that, you can analyze the crash data. Different types of software are available to read the EEPROM chip, but all essentially do the same job. At last, you can finally replace the airbag module computer. Replace all the values from the crashed chip with the ones from the virgin chip and rewrite it into the computer. That way, the hard codes that were present can be cleared. The final step would be to replace the module into your car and check if you were able to successfully reset it. Within 6 seconds, your SRS light should go off. Your vehicle’s tech-stream software can also be checked to see that there are no more codes or faults present.
The airbag module is a key component of a vehicle. It controls the supplemental restraint system in your car including the airbag sensors, seat belt pre-tensioners, and the inflators. In addition, it acts as a storage box for hard codes and crash data when your vehicle is involved in a collision.
When a vehicle is involved in a crash that deploys the airbags, crash data and hard codes are automatically stored in the unit. Only a reset or buying a brand new unit will allow a driver to have a properly functioning airbag module. Many people choose to purchase a new module at the dealer, but this comes with a hefty price tag. Others choose to reset it at home. You certainly can remove the SRS airbag module from your vehicle and reset the unit to factory settings, you just need to have the right tools and follow the steps correctly in order to succeed in resetting it properly.
To begin the process, you need to remove the SRS airbag module from your vehicle. Generally, it can be found underneath the driver’s seat but sometimes its location varies to underneath the front passenger seat, in the center console, kick panel, behind the steering wheel, or under the radio. To access the module, the bottom half needs to be removed. After it has been removed, the disassembly process can begin. When you open up the unit you need to look for the 8-pin SMD EEPROM chip that stores all the crash data. You should then solder some 32-gauge hookup wire to connect the unit to a serial port EEPROM reader. The next step would be to analyze the crash data. There are different types of software available that can read from the EEPROM chip. After analyzing, you can finally replace the airbag computer. Replace all the values from the crashed chip with those from the virgin chip and rewrite it into the computer so that the hard codes can be cleared. The final step would be to place the unit back into your vehicle and check if the reset was a success. Within just 6 seconds, your SRS light should go off. You can also check with your vehicle’s tech-stream software to see that there aren’t any faults or codes present.