
Interior water damage and a wet carpet
A wet carpet with no standing water on the floor means water has reached the cabin. Toyota treats such a car as internally flooded. We open the body drain plugs at the rear corners of the cabin floor and in the spare wheel well to let the water out.

Electrical system water damage
Toyota's fourth level, the lower edge of the dashboard, covers every harness, the junction and relay blocks, and the electrical parts under the bonnet. We test each failing circuit, then replace the corroded harness, junction block or relay block.

Wiring that runs hot
Corrosion raises the resistance of a joint, and that resistance turns current into heat. Toyota warns that this heat can lead to a fire. We find the hot connector or terminal with the circuit under load and replace it.

An airbag warning lamp after the water
Toyota inspects the airbags, the seat belt pretensioners and their harnesses once water reaches the lower edge of the doors. We replace each SRS part with a damaged connector with a new part. A car that then needs the maker's SRS coding goes to its maker's dealer.

An engine knock or rattle
A knock or rattle is one of the engine checks Toyota runs on a car driven through flood water. The intake air filter, air box and piping are checked with it. We replace a wet air filter, clear the water from the intake, and repair the engine parts the water damaged.

Brake and suspension water damage
Mazda warns CX-5 owners that wet brakes lengthen the stopping distance or pull the car to one side. Toyota's second level, the axle centreline, covers the brake parts, tie rods, ball joints, wheel hubs and bearings. We strip, clean, reassemble and grease the brake and steering parts that sat in water, and replace corroded ones.