Water rarely kills a module the way people assume. It's not the splash — it's the corrosion that keeps eating the board for weeks afterward. By the time a unit reaches us, the damage is usually on the copper, not the silicon, and that changes what's possible.
What water actually does
Conductive contamination bridges pins and triggers strange, intermittent faults. Then galvanic corrosion attacks traces, vias, and component legs — especially around connectors where moisture pools. The chips themselves are often fine; the paths between them are what fail.
What's recoverable
A lot, in skilled hands: cleaning and neutralizing the corrosion, rebuilding lifted pads and broken traces, replacing corroded passives and connectors, and — when memory is affected — chip-off data recovery to pull the VIN, immobilizer, and calibration data off the original flash before it's gone.
What isn't
Deep corrosion that has wicked under a BGA or into a chip's package is usually past saving. And if memory is destroyed with no backup and no donor, the data goes with it. We're honest about that up front rather than billing for a rebuild that can't verify.
Why discontinued units matter here
For modules that are no longer available, restoration isn't the cheap option — it's the only one. Saving the original board keeps the car on the road when "just buy a new one" isn't a sentence that ends anywhere.
Don't scrap a water-damaged module on assumption. Send it in for an honest assessment.
Got a module that won't cooperate?
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