Your Car Got Wet in the Storm: 5 Things You Should Never Do After Flood Exposure
A storm has passed through Fern Park, the rain has eased, and your vehicle appears to be sitting safely in the driveway. Before you reach for the keys, pause.
Floodwater can damage a vehicle even when the exterior looks normal. Water may have entered the engine intake, electrical connectors, wheel bearings, brake components, fluids, or carpet padding. Some problems appear immediately. Others develop days or weeks later as corrosion, mold, and electrical faults spread.
Central Florida’s hurricane season continues through November, so knowing what to do after a storm is especially important for drivers in Fern Park and nearby communities.
The safest first step is simple: do not start or drive a vehicle that may have been exposed to standing water until it has been assessed.
First, determine how much water your vehicle encountered
A vehicle that drove through a shallow puddle is not automatically in the same situation as one that sat in floodwater.
A brief splash below the door sills may only require checking the brakes, tires, underbody, and air intake for debris. However, risk increases significantly if:
- Water reached the wheel hubs or higher
- The vehicle stalled in standing water
- Water entered the cabin
- You can see a waterline, mud, or silt inside the vehicle
- The air filter or airbox is wet
- The battery, wiring, or control modules were submerged
If the vehicle was partly or fully submerged, treat it as flood-damaged until a qualified technician confirms otherwise. Here are five mistakes that can turn a manageable inspection into a much more expensive repair.
1. Never crank the engine “just to see if it starts”
This is one of the most costly mistakes after flood exposure.
The problem
When a vehicle moves through deep water, water can enter through the air intake. If it reaches the engine cylinders, the engine may be unable to compress it.
Air compresses easily. Water does not.
The consequence
If you crank the engine with water inside a cylinder, the pistons and connecting rods can be forced against an incompressible liquid. This condition, known as hydrolock, can bend connecting rods, damage pistons, or break internal engine components.
Even if the vehicle did not stall, water may still be sitting in the intake system or cylinders. Repeatedly turning the key, jump-starting, or push-starting the vehicle can make the damage worse.
Do not attempt to drain water from the engine or clear the cylinders yourself unless you have the proper equipment and experience. Have the vehicle towed for a professional inspection instead.
If the battery is accessible and the vehicle is a conventional gas-powered car, you may disconnect the negative terminal: but only if the area is safe, the water is no longer rising, and you can do so without standing in water. Do not attempt this on a hybrid or electric vehicle, or if you are unsure which components are safe to touch.
2. Never assume it is fine because it started and ran
A vehicle that starts after a storm is not necessarily a vehicle that escaped damage.
The problem
Some water-related problems do not prevent the engine from running immediately. Moisture may remain inside wiring connectors, sensors, fuse boxes, airbag components, or electronic control modules.
Water can also contaminate engine oil, transmission fluid, differential fluid, and other lubricants. These fluids may look normal at first, even when they no longer provide adequate protection.
The consequence
The car may run normally for a short time and then develop warning lights, rough shifting, intermittent starting problems, stalling, or electrical “gremlins” weeks later. Corrosion inside a wiring harness or connector can continue developing long after the vehicle appears dry.
A delayed failure is often more difficult to diagnose because the original storm exposure may not seem connected to the new symptom.
A professional inspection should include the intake system, fluid condition, wiring, connectors, control modules, and visible waterline evidence: not just a quick test drive around the block. NHTSA’s guidance on hurricane- and flood-damaged vehicles also warns that flood damage may not be visible immediately.
3. Never just let the vehicle air-dry
Opening the doors and waiting for the Florida heat to dry the interior is not a complete repair.
The problem
Water can remain trapped beneath carpet padding, under seats, inside door cavities, around electrical connectors, and in areas that do not receive enough airflow. Floodwater also contains dirt, oils, chemicals, and other contaminants that clean rainwater does not.
Underneath the vehicle, moisture may remain around wheel bearings, suspension joints, brake components, and fasteners.
The consequence
Trapped moisture creates the conditions for mold, mildew, rust, and corrosion. Carpet padding can hold water for days, allowing odors and mold growth to develop beneath an apparently dry surface. Corroded connectors can create intermittent electrical faults, while contaminated grease can contribute to premature bearing wear or seizure.
Brake components may also be affected. A vehicle can appear to stop normally while water and debris begin causing corrosion on rotors, calipers, parking-brake parts, or related hardware.
Drying and cleaning may be part of the recovery process, but it should follow a proper assessment. Depending on the exposure, the vehicle may need fluid checks, interior removal, connector inspection, corrosion treatment, and professional detailing. Philips Auto & Tires offers auto body repair and detailing in Fern Park when storm exposure leaves both mechanical and interior concerns.
4. Never drive at highway speed to “blow the water out”
This advice sounds practical, but it can create new safety risks.
The problem
High-speed driving does not remove water from hidden electrical connectors, carpet padding, bearings, or contaminated fluids. It also does not make an engine safe if water has entered the intake.
After even moderate water exposure, the brakes may be wet or contaminated, the tires may have picked up debris, and the steering or suspension may have been affected.
The consequence
Driving at highway speed can turn a hidden issue into a loss-of-control situation. Reduced braking performance, a seized bearing, an electrical failure, or an engine problem can occur while you are far from home.
Water can also be forced deeper into components as the vehicle moves. If the vehicle stalled in water, sat with water around the hubs, or shows any interior waterline, arrange a tow rather than driving it to a shop.
For a vehicle that was only lightly splashed, you can still watch for changes such as pulling while braking, grinding, vibration, tire-pressure loss, warning lights, or unusual steering feel. If any of these appear, stop driving and arrange an inspection.
5. Never skip the insurance call or handle everything yourself
Storm damage can be stressful, especially when many vehicles in the area need attention at the same time. Still, delaying documentation or beginning major repairs without an assessment can complicate the claim process.
The problem
Without photos and a clear record, it may be difficult to show how high the water reached or which symptoms appeared after the storm. Cleaning the vehicle, draining fluids, replacing parts, or attempting a restart before the insurer has reviewed the damage can also make the original condition harder to establish.
The consequence
You may lose useful evidence, delay an insurance decision, or pay for repairs before knowing whether the vehicle is repairable or should be considered a total loss.
Instead:
- Photograph the exterior, interior, engine bay, wheels, carpet, dashboard, and any visible waterline or mud.
- Record where the vehicle was parked and whether it was running, stalled, or submerged.
- Contact your insurance company as soon as practical.
- Do not drain fluids or remove major components before receiving guidance, unless an immediate safety concern requires it.
- Have the vehicle towed to a qualified repair facility for an inspection.
- Tell the technician exactly how deep the water appeared to be and whether you attempted to start the vehicle.
If the car is a hybrid or EV and the battery or high-voltage components may have been exposed, do not charge it, jump-start it, park it inside a garage, or attempt a DIY inspection. Contact the manufacturer or a qualified professional for specific safety instructions.
What a proper post-storm inspection should cover
A flood assessment should be based on evidence, not only whether the car starts. A technician may inspect:
- Air intake, airbox, and filter
- Engine oil and other vehicle fluids
- Wiring harnesses, connectors, fuses, and control modules
- Battery and charging systems
- Brake components and parking-brake mechanisms
- Wheel bearings, suspension, and steering parts
- Tires for debris, leaks, or damage
- Carpet padding, upholstery, and hidden moisture
- Warning lights and electronic safety systems
At Philips Auto & Tires, our ASE-certified technicians have more than 25 years of experience working on all makes and models. As a veteran-owned and operated shop, we understand that customers want clear information before committing to repairs: not guesswork or pressure.
We offer walk-ins and appointments six days a week, and most services are covered by our nationwide worry-free 12,000-mile/12-month warranty. If storm damage creates an unexpected expense, no-credit-check financing through Snap Finance may also be available for qualified repairs.
Protect your vehicle after the next storm
A little water around the tires does not always mean a vehicle is ruined. But standing water, a wet interior, a stalled engine, or a visible waterline should never be dismissed.
Do not crank the engine. Do not assume a running car is healthy. Do not rely on air-drying or highway driving to solve hidden problems. Document the damage, contact your insurer, and arrange a professional inspection before getting back on the road.
If your vehicle was exposed to stormwater in Fern Park or a nearby community, book an inspection with Philips Auto & Tires or call (407) 505-2237. We are located at 8495 South US Highway 17 92, Fern Park, FL 32730, ready to help you make a safe, informed next step.