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Ever wondered how long EDR data last?
Nick - Driven Forensics • 2 December 2024

Crash data detected , but after how long? How long does EDR data last

Our client approached us with a problem. How long does EDR data last? They had purchased a brand new Kia from the dealership in early 2024. A few months into their ownership, they noticed their electric charge point at the front of the vehicle had dropped and something was visibly wrong.


Our client had returned to the dealership with the issue and they were stunned to find out the front bumper reinforcer had been severely deformed. When the dealership stated they were not responsible, the client asked for our forensic vehicle examiner to conduct a forensic vehicle investigation.

The customer wanted to know whether any event data was present on the Kia event data recorder (Kia EDR), how long does EDR data last, whether our forensic vehicle examiner thought there was likely to be any data in the Kia EDR and whether the Kia EDR data might be able to assist in determing when the damage was likely to have been caused.


Our forensic vehicle examiner started by assessing the evidence a series of pictures the client sent and as a result, our forensic vehicle examiner believed there was a reasonable prospect of data having been recorded on the Kia EDR, given the severity and location of the damage.


Our client found themselves available at the weekend, so we attended, downloaded the Kia EDR and found there was indeed collision data present.


From that data, we were able to provide the client with a likely date range as to when the damage was caused and the circumstances under which it was caused.


So, going back to our original question, how long does EDR data last, the data we recovered was around 6 months old.


This is even more remarkable when you consider that the airbags had not been deployed, as you are generally less likely to recover data from the Kia EDR (or any EDR) when the airbags have not deployed.


It is this reason why when customers ask us "How long does EDR data last?" our response is always the same. Tell us as much about the vehicles involved and the incident as you can and from there we can assess the pro's and con's.


Need an event data recorder downloading (imaging)? Contact us today.


e. enquiry@drivenforensics.co.uk

t. 0113 534 8708

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This post forms part of a series of forensic vehicle examiner posts, where we answer as many of the commonly asked questions we get as a forensic vehicle examiner. Our aim is to answer the most commonly asked questions and to dispel certain myths that lurk. If you have a question for our forensic vehicle examiner, simply drop us an email at enquiry@drivenforeniscs.co.uk The brakes on your car are incredibly well designed and complete brake failure is rare. The cause of any brake failure should be investigated, either by your mechanic or vehicle technician, or if you are involved in a serious collision, by a forensic vehicle examiner. But what are some of the most common reasons brakes fail? Brake pad or brake lining failure Brake pads or brake drum linings, are specifically designed with a friction material to withstand the heat generated when braking. The friction material is mounted to a backing plate, and when braking, that friction material is forced against the brake disc or brake drum, which causes the vehicle to slow. As the friction material reduces or is non-existent, the ability to disapate the heat created during braking is reduced. Where the heat continues to build, it can lead to brake fade. Brake discs or brake drum failure Brake discs or brake drums are a key component in the braking system. The discs and drums are essential in disapating heat as well as giving the pads/linings a surface to grip to. Where the discs become too thin, are contaminated with something (i.e. oil etc), pitted or seriously worn, this can lead to reduced effectiveness and can, in exterme circumstances, lead to brake failure. Low brake fluid levels or brake fluid leak In order to apply the brakes, fluid needs to be forced through the brake lines to each wheel. Where the brake fluid is either low or there is a leak in the system, the fluid does not reach the brakes and therefore the brakes cannot be applied. It is worth saying that the brake fluid system is a closed system, meaning the brakes do not consume to fluid, so there should be no need to top it up. When your brake fluid is low, it can either be a sign that your brakes need replacing or you have a leak. In either case, it is worth taking your car to your local mechanic or vehicle technician to have them checked. Seized brake caliper / seized wheel cylinder When your brake calipers or wheel cylinders seize, they can seize in either the on or off position. When they seize in the on position, the brakes on the wheel will be permanently applied to some degree, meaning heat will quickly build up and likely lead to brake fade and brake failure. When they seize in the off position, no matter how hard you press the brake pedal, the brakes simply will not apply, meaning you have no means of slowing your vehicle down using the brakes. Driven Forensics in-house forensic vehicle examiner can assist you in determining whether a vehicle has suffered a brake failure, and if so, why. During a forensic vehicle inspection, not only do we inspect each component, but we also photograph and document their condition for later use in Court and other proceedings. If you need a forensic vehicle examiner to inspect your cars brake system during a forensic vehicle inspection, contact us today. T. 0113 534 8708 | E. enquiry@drivenforensics.co.uk
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