How to Drive an Automatic Transmission Car Through Deep Water?

[StJuliana]

When driving through water, try to avoid stopping, accelerating, shifting gears, or releasing the throttle. If the car stalls in the water, do not restart it immediately. Instead, take measures to move the car out of the flooded area. Below are some key points about vehicle water fording: 1. Introduction: This refers to driving a vehicle on low-lying, waterlogged roads, essentially passing through water. It commonly occurs during rainy weather in low-lying areas where poor drainage causes road flooding. 2. Reasons for stalling: The high-voltage ignition system may get wet or short-circuited due to water ingress, causing the engine to stall. This is a frequent occurrence where vehicles stall despite appearing to pass through shallow water, often due to water splashing. 3. Potential hazards: Dead branches, leaves, and discarded plastic bags can wrap around bearings and suspension components, creating safety risks.

[NoraAnn]

Driving through deep water is very important to me. I always assess the water depth first. The safety standard is that the water should not exceed the center of the wheel hub; otherwise, the risk of water ingress increases significantly. Automatic transmission cars are most afraid of water entering the engine, so it's essential to shift to a low gear like L or 1st gear. Higher RPM can enhance exhaust pressure to prevent backflow. Maintain a steady speed, not exceeding 5-10 km/h; avoid sudden acceleration, as splashing water into the engine compartment can be disastrous. If the engine stalls, never restart it immediately, as this could lock up the engine and lead to major repairs. I've seen many friends overlook this and end up spending tens of thousands on repairs. After crossing water, immediately check the air filter and chassis to ensure they are dry. Also, monitor the engine temperature after rain. Safety first—don't force your way through if the water is too deep.

[DeAmara]

When driving an automatic transmission through deep water, I usually shift to a lower gear like L or S mode. Keeping the engine RPM around 2000 helps with water drainage. Maintain a steady pace: gently press the accelerator to keep a constant speed, and avoid stopping in the middle of the water as it may cause the engine to stall. Keep the speed under 5 km/h; going too fast can splash water into the intake. After crossing, drive a short distance to evaporate any remaining water. Check if the air filter box is wet and clean it if necessary. Also, pay attention to the weather—water depth is hard to gauge in heavy rain, so checking the map beforehand and taking a detour is safer. These tips can help minimize accidents.

[WilliamAnn]

Key components to protect when driving an automatic transmission vehicle through deep water. I would use a low gear such as 1st or 2nd to increase engine vacuum for water resistance. Avoid stopping while shifting gears; after crossing at a steady speed, let the engine run for a few minutes to dissipate heat. Check seals and intake pipes; if water enters the engine, disassembly and cleaning repairs are needed. Regularly maintain sealing rings to prevent water corrosion.