What water does to a fob
A key fob is packed with a tiny circuit board, a battery, and a chip, none of which like water. Fresh rainwater is less harsh than flood water or salt water, but any moisture that reaches the board can short circuits and start corrosion. With South Florida storms and king tides, flooded fobs are a regular problem here.
The emergency blade hidden inside most fobs is unaffected by water and will still unlock your door by hand. So even with a soaked fob, you usually have a way into the car while you sort out the electronics.
Drying steps that sometimes work
Act fast. Pop the fob open, remove the battery, and gently blot everything dry. If it saw flood or salt water, a light rinse with clean fresh water before drying can actually help by washing away corrosive residue. Then let the parts air dry fully for a day or two before testing with a new battery.
Resist the urge to use high heat from a hair dryer or oven, which can warp the plastic and the board. Drying improves your odds, but a fob that took on dirty flood water may work for a while and then fail unpredictably, which is risky if it is your only key.
When to replace and reprogram
If the fob is dead, intermittent, or was submerged in flood or salt water, replacing it is usually the dependable choice. A mobile locksmith can supply a new fob, cut the blade to your locks, and program it to your car for most makes and models, right at your home or office.
We will give you an honest read on whether drying is worth a try or whether a fresh fob is the safer bet for your situation. Either way, we confirm your year, make, and model and quote the job before we start.
Still have a key or fob question?
Tell us your year, make, and model and we will confirm exactly what your vehicle needs before we head out.