Buying flood-damaged cars: the complete risk guide
Flood cars can be a bargain or a nightmare. How to tell fresh water from salt, what to check, and when to walk away.
REPAIR · 5 min read
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Fresh water versus salt water
This is the first and most important split. A fresh-water car can often be recovered. A salt-water car corrodes from the inside for years and is usually a parts car. If the location or description hints at coastal or sea water, be very cautious.
How high did the water get?
Water at the carpet line is recoverable. Water at the dashboard line means the electronics and modules were submerged, and that is where the money disappears. Look for the tide mark on the door cards and seats in the photos.
The electronics lottery
Modules that sat underwater while powered can fail unpredictably, sometimes months later. Every control unit below the water line is a risk: ABS, body control, seat modules and any amplifier mounted low. Price used replacements for all of them, do not assume they survived.
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The repair reality
Recovering a fresh-water car means stripping the interior to bare metal, drying it for days with a dehumidifier, dropping every fluid and cleaning every connector below the line. It is labour heavy. Budget accordingly and do not underestimate the time.
When to walk away
Salt water over the sills, any hybrid or EV with a submerged battery pack, or any car whose ECU went under. These are parts cars. Bid them as parts money or leave them. The Analyzer caps salt-flood deals at a lower grade for exactly this reason.
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