Airbag Module Repair and Crash Data Reset: Your Own SRS Module Back in Service
Summary: The crash is repaired and the new airbags are in, but the airbag light is still on. After a deployment the SRS module keeps a record of the crash, and that record holds the warning lit even with the replacement airbags fitted. A crash-data reset clears it and returns the module already in the car to service; on selected modules we also repair faults that light the lamp without any crash. Your garage removes the module and posts it to us, the same module comes back to be refitted, and the work is warranted for life.
This page covers what crash data is and why the module will not let the light go out, where a reset ends and a repair or a new part begins, and the airbag modules we list. The deployed parts themselves are never part of the reset, and the section on what a reset does not cover sets that out plainly.
The service in brief- Reset: clears the crash record a deployment leaves in the SRS module, so the existing module returns to service
- Repair: on selected modules, for faults that light the airbag lamp with no crash involved
- Outside the reset: airbags that deployed, pretensioners that fired and any other one-shot part; your garage renews them
- Route: by post from anywhere in the UK, with your garage removing and refitting the module
- Returned: the module you send, tested on our in-house Hardware-in-the-Loop rigs first
- Warranty: lifetime, with no limit on mileage
New airbags, same warning light: why it stays on
The pattern is a familiar one after a crash repair. The bodywork is straight, the deployed airbags have been renewed, and the airbag light is still lit on the dashboard. It looks as though the garage has missed something. What the light is showing is the SRS module’s record of the crash, which the repair has not touched.
The SRS module, short for supplementary restraint system, is the unit that decides when to fire the airbags and the seatbelt pretensioners. Once it has fired them, it logs the deployment and keeps that crash record. Renewing the airbags changes the parts around the module; it leaves the record where it was.
So a crash repair can be finished in every visible sense and the restraint system can still report a fault. The record has to be cleared before the existing module goes back into service. Clearing it is what a crash-data reset does.
What crash data is, and why the module holds on to it
Crash data is the record an SRS module keeps of a deployment: the entry that says the restraint system has fired. It is held by the module itself rather than by the airbags, which is why fitting new airbags leaves it in place.
Keeping that record does not mean the module has failed. A module that has logged a deployment carries on reporting it, and the airbag warning light is how the car shows that report on the dashboard.
Two practical points follow. A module does not have to be thrown away because it has been through a crash, because the reset clears the record and returns the existing unit to service. And the reset is a separate job from the crash repair: it is carried out on the module itself, on our bench, which is why your garage sends us the module rather than the car.
The record outlasts the parts. New airbags do not clear a crash record. Clearing it is a job of its own, and that is why the warning light can survive a finished repair.
Reset, repair or a replacement module?
Three routes come up when an airbag light will not clear. They answer different problems, so it helps to know which one you are facing before anything is ordered.
- Crash-data reset (also searched for as an airbag module reset or SRS module reset). For a module that has logged a deployment. The crash record is cleared and the car’s own module goes back in. It is the service most of our listed airbag modules are sent in for.
- Repair. For a module with a fault of its own and no crash behind it: the lamp is lit, nothing has deployed, and the restraint system may have disabled itself. We repair selected modules for faults like these.
- Replacement module. A new or used module is a different unit from the one in the car. It has to be matched to the car it is going into, and the deployed one-shot parts still have to be renewed either way.
The reset’s advantage over a replacement is that the car keeps the module it already had. The unit that goes back in is the unit that came out, so no different module has to be matched to the vehicle.
None of the three routes brings back a deployed airbag or a fired pretensioner. That boundary matters enough to have its own section.
What a crash-data reset does not cover
A reset clears the module’s record of the crash. Some parts of the restraint system cannot be reset at all, because they are one-shot parts built to work once:
- Deployed airbags are renewed, never reset.
- Seatbelt pretensioners that fired in the collision are replaced in the same way.
- Any other one-shot part that fired goes the same way.
New ones go in at the garage first, and the order matters. A module back in service in a car that still carries fired parts is not a restraint system that can be relied on, so the reset is never the whole answer after a crash.
The same applies to the rest of the crash repair. The reset deals with the module and nothing else; the remainder of the work stays with the garage repairing the car.
Airbag faults that point at the module, and those that do not
The airbag light speaks for the whole restraint system, not the module alone. The table pairs the situations our airbag listings describe with the route each one takes, and sets the garage’s part alongside ours.
| What you are seeing | Route for the module | The garage’s part |
|---|
| Airbags deployed and since renewed; warning light still on | Crash-data reset | Renews any other one-shot part that fired, then refits the module |
| A seatbelt pretensioner fired in the collision | Crash-data reset for the record the crash left | Replaces the fired pretensioner before refitting |
| A stored crash code stops the light clearing | Crash-data reset | Renews whatever fired in the crash |
| A stored fault code stops the light clearing, with no crash | Repair, on selected modules | Removes and refits the module |
| SRS light staying on, nothing deployed | Repair, on selected modules; tell us the vehicle first | Removes and refits the module |
| The restraint system disabling itself | Repair, on selected modules | Removes and refits the module |
| A seatbelt pretensioner fault with nothing fired | Describe it on the repair form and we will say which route applies | Removes the module once the route is confirmed |
Each of our published airbag listings names the same four faults: the SRS light staying on, a stored crash or fault code stopping it clearing, seatbelt pretensioner faults and the restraint system disabling itself. Because the light covers the whole system, none of those is proof on its own. Telling us what the car is doing, and whether anything deployed, is how the right route is chosen.
Sinspeed · SRS module service
Airbag light still on after the crash repair?
Put the vehicle and what the airbag light is doing on the repair form, and say whether anything deployed. We will tell you whether the module needs a reset or a repair before it is posted.
UK-wide by post · Your garage removes and refits · Lifetime warranty
Airbag modules we list, and vehicles we do not
Three airbag modules have a published listing of their own, each naming the faults it covers:
Each listing carries its own price, and all three sit together in our airbag ECU listings. Sinspeed is an independent repair specialist, not part of Vauxhall, Alfa Romeo or any other vehicle maker; the names say which vehicle each module fits.
A vehicle missing from that list can still be asked about. Describe the car and the airbag fault on the repair form, and we will confirm whether that module can be reset or repaired here.
How the postal airbag module service runs
- Tell us the car and what happened
On the repair form, give the vehicle, what the airbag light is doing and whether any airbags or pretensioners deployed. That is what tells us whether the module is in for a reset or a repair.
- Your garage takes the module out and posts it
Taking the module out is the garage’s side of the job, and the module can reach us by post from anywhere in the UK. The fired one-shot parts can be renewed at the garage while the module is away.
- Reset or repaired, then tested
We clear the crash record, or repair the fault on a module we cover. Units are tested on our in-house Hardware-in-the-Loop rigs, which simulate real-world heat, vibration and load, and every module goes through them before it is packed.
- The module you sent comes back
You get back the same module, not an exchange unit, and your garage refits it once the new one-shot parts are in. The work carries a lifetime warranty.
Airbag module reset and repair: your questions
Why is the airbag light still on when the airbags have been replaced?
After a deployment the SRS module keeps a record of the crash, and while that record is in place the warning stays lit, whatever new parts have been fitted. A crash-data reset clears the record so the car’s own module can go back into service. If the light came on with no crash at all, the cause lies elsewhere, and a repair on selected modules is the route to ask about.
Does a crash-data reset make the car safe again after a collision?
Not on its own. The reset clears the module’s record; it does not renew deployed airbags, fired seatbelt pretensioners or any other one-shot part, and your garage fits new ones first. The reset is one step in putting the restraint system right, alongside the rest of the crash repair.
What does a lit airbag light mean for the people in the car?
A lit airbag lamp is a warning that, in a collision, the bags may stay where they are and the people in the car may not be protected as they expect. Treat the warning as a reason to stop relying on the car until the cause has been found and fixed.
Can you repair an airbag module that has never been in a crash?
On selected modules, yes. Faults that light the airbag lamp with no deployment behind them, such as a stored fault code that stops the light clearing or a restraint system that disables itself, are what the repair is for. Give us the vehicle and the fault on the repair form and we will say whether yours is a module we repair.
Why not fit a replacement module instead?
A replacement, new or used, is a different unit from the one in your car, and it has to be matched to the car before it goes into service. A reset sends back the module that came out, so the unit refitted is the one the car already had. Whichever route is taken, the deployed one-shot parts still have to be renewed.
Where do I find the price for an airbag module reset?
Each listing in our airbag ECU range carries its own price, shown on the page for that vehicle. If your vehicle is not listed, the repair form is where to describe it and the airbag fault, and we will come back to you on whether the module is one we cover.
Sinspeed · airbag module reset and repair by post
Get the car’s own airbag module back to work
Register the module online and have your garage post it in. It returns reset or repaired, rig-tested and ready to refit once the deployed parts are renewed.
Tested on in-house HIL rigs · Same module returned · Lifetime warranty, no mileage limit
