Endurance concerns repeated rewriting; retention concerns keeping stored information over time. Neither headline figure alone explains why a particular module has lost data.
What to check next
Assess the device specification and operating history alongside repeatable read results. Consider temperature and prior repair attempts without assuming that age proves wear-out. The repair decision should identify the affected data and any hardware fault that could damage it again.
Useful information for an enquiry
Send the module history, memory identification and the symptoms before data work began.
A data-sheet lifetime is conditional, not a countdown for every vehicle. Replacing a chip without establishing the correct contents may leave the module unusable.
Speak to AXION
For module programming and coding support, send your vehicle details and fault report. Workshop assessment is in Didcot, Oxfordshire. Suitable postal or remote work is confirmed before booking.
Technical background from STMicroelectronics. The referenced design explains the principle; the vehicle-specific procedure determines the repair.
Related reading — Power interruption during memory writing needs a careful recovery assessment. Browse all vehicle-electronics diagnostic notes or return to the repair library.