3 Vital Steps for Preserving Electronic Evidence in Civil Lawsuits

The wrecked car gets towed, sits in a lot for a week or two, then goes to the scrapyard. Inside it is a small computer that recorded how fast the other driver was going in seconds before the crash. Once the car is crushed, that recording is gone for good. Most electronic evidence works the same way. It has an expiration date, and nobody warns you before it passes. Three steps keep it around long enough to use in court.

Extract the Vehicle Box ASAP

Most light vehicles on the road carry an event data recorder governed by 49 CFR Part 563. On older models, it holds five seconds of pre-crash data at two samples per second: speed, throttle position, brake status, belt use. NHTSA’s December 2024 final rule stretches that to 20 seconds at 10 Hz, but compliance does not begin until September 1, 2027.

The thing is that car crash data is incredibly fragile. If someone survives a collision but the airbags stay intact, the car computer saves a temporary record of the impact. And the system will easily overwrite that memory. If the same person drives the car away and hits a hard bump, the computer records the new jolt and deletes the real crash data forever. The first move for any Phoenix car accident lawyer is a spoliation letter, out the door within 24 to 48 hours. This needs to be sent out to:

• The at-fault driver
• The insurer
• Whatever tow lot is holding the car

 It is vital to name the module and demand the vehicle sit untouched, and that any scrapping or repairing effort will be treated as spoliation. 

A Screenshot is Never Solid Evidence

A screenshot is just an image. Anyone with a free photo editor can change a name, a time, or a word in it, and nothing on the surface shows what was touched.

Have someone copy the phone properly instead. A real copy keeps what a screenshot throws away: the true send time, the number behind the name, and a code that works like a fingerprint. Change one letter in the message, and the code changes, which is how the other side checks nobody edited it. 

Rule 902 (14) lets a qualified examiner make a copy and sign a short statement about how they did it, which usually saves a trip to the witness stand. However, it’s equally important to tell your client to quit tidying the thread, too. Three deleted messages look like hiding something once the other lawyer asks about them under oath.

Google Won’t Share GPS History

A subpoena to Google for Location History used to be routine. That door closed. Google moved Timeline to on-device storage, and by July 2025 the copies on its servers were deleted or pushed down to phones. Google said as much to the Supreme Court in a March 2026 brief in Charite.

So the location trail now sits on a handset whose owner can erase it in about ten seconds. Therefore, it’s vital to send the preservation demand to the person, not the platform. Then, move for a device inspection early because a phone that gets replaced in month four takes the trail with it.

Endnote

Taking care of these things is not difficult but you have to work with a deadline. The letters go out in the first 48 hours or the black box gets crushed along with the car. The phone gets imaged in week on or the client trades it in by week twelve. Judges can’t restore a file that nobody bothered to hold. Therefore, it’s vital for lawyers to do the boring part early or they will lose the battle.