Will the car have problems after passing through waterlogged roads?

[EllieDella]

Passing through waterlogged roads can have certain impacts on a car. After driving through water, you should choose a wide and safe location to park, remove any waterproof coverings, check if the engine ignition system has been exposed to water, and use a dry cloth to wipe down any damp electrical components to prevent short circuits or open circuits. Inspect each gearbox for water ingress, check for any debris blocking the radiator fins, examine the tires for damage, and look for any aquatic plants tangled under the chassis. Clean the vehicle promptly. Start the engine and let it idle for several minutes to reach normal operating temperature, which helps dry out any water and moisture on the engine. After confirming the car is in good technical condition, drive at low speed for a short distance and deliberately press the brake pedal lightly a few times. This allows the brake pads and drums to generate heat through friction, drying and evaporating any residual water in the braking system to ensure optimal brake performance. If the car has been submerged in water, it is best to take it to a professional auto repair shop or authorized service center for repairs rather than opting for cheaper roadside workshops.

[McEdward]

Last time my car had issues after going through deep water, experience tells me there are several areas most prone to damage. If water enters the engine, it could be completely ruined, especially in turbocharged cars where the air intake is positioned lower, making it even more dangerous. Wiring soaked in water can short-circuit, causing various warning lights to illuminate like a Christmas tree. If water enters the exhaust pipe, at best it can cause poor exhaust flow, and at worst, it can ruin the catalytic converter. Waterlogged interiors can retain a musty smell for up to half a year, and if water enters the chassis bearings, lubrication failure can cause squeaking noises. I remember once, two weeks after rain, I noticed rust and strange noises from the brake discs before realizing the problem. Key point: If the engine stalls in water, never attempt to restart it—calling a tow truck is the safest option.

[CamilaFitz]

Young car owners share their post-flooding woes! My brand-new car had just passed its first maintenance when I drove through a puddle, only to find the headlights full of condensation, with yellowed lenses looking like cataracts. The soaked cabin air filter blew out air smelling like a fish pond. Two underbody protection panels were torn off, and the screws turned rust-red. The most surprising was discovering a month later that the spare tire well had collected water – green mold had even grown under the rear floor mats. Advice: After water crossings, check these areas: clear leaves and debris from wheel arches, scrub rust off brake discs with several brake applications, and remember to unclog door drain holes.

[StElisa]

As a mechanic with ten years of experience, I've seen too many water-damaged vehicles. If the water level exceeds half the height of the tires, don't force your way through—water entering the transmission vent can cause gear oil emulsification. Submerged drive axle oil seals typically start leaking within three months. If water enters through cracked CV joint boots, the universal joint will soon start making clicking noises. More insidious is when water oxidizes electrical connectors, often causing sudden window regulator failures. Last time, a car ingested half a cup of water into the air filter box, bending the piston connecting rod. Quick tip: Check engine oil color immediately after water exposure—milky appearance indicates water contamination.

[VanLena]

Veteran Driver's Advice: Don't take risks if water exceeds the center of the wheel hub. The worst I've seen is small stones getting stuck between the brake pads and brake discs, making it sound like sandpaper grinding. Water weeds clogging the chassis gaps can cause abnormal vibrations, and a blocked AC drain pipe can lead to water accumulation under the passenger foot mat. Rust on metal parts is secondary, but water entering and causing rubber bushings to swell and crack is deadly. Key check: Ensure the differential vent hole isn't blocked—last time my car took in water here, the differential oil turned into milk tea. After wading, remember to rev the engine a few times to expel water from the exhaust pipe, preventing backflow into the engine.

[ElliotLynn]

Off-Road Enthusiasts Reminder: Six Must-Do Steps After Water Crossing. First, check if the air filter box has taken in water—never start the engine if it's wet. Second, crouch down to inspect whether the wiring harness connectors under the chassis are soaked; if so, dry them immediately with compressed air. Third, check if the oil ring on the dipstick appears cloudy. Fourth, after starting the engine, press the brakes repeatedly to remove any water film. Fifth, lift and dry the door seals to prevent them from becoming sticky. Sixth, monitor for unusual noises from the chassis within three days—water-damaged bearings don’t fail immediately. Bonus Tip: Water reflections can be deceptive; observe the water marks on nearby vehicles for a more accurate depth assessment. Avoid attempting if the water exceeds 30 cm for sedans.