What Does Your "Dear Car" Need When the Rainy Season Comes?

How to Take Care of Your Car During the Rainy Season
Latest update date: February 08, 05

The rainy season in Saigon usually lasts from April - May to September - October, some years it even ends later. According to statistics, the average annual rainfall in Ho Chi Minh City is about 4mm, concentrated mainly in the rainy season. The rains often come quickly and strongly, causing local flooding in many places, greatly affecting traffic and vehicles, especially cars.

AAA (American Automobile Association): AAA research shows that heavy rain significantly reduces driver visibility. In moderate rain, visibility can be reduced to 1/4 compared to sunny weather.

With the traffic situation in Saigon, cars stalling due to flooding is quite common and causes a lot of trouble. According to records from car garages, the number of cars having problems and breakdowns in the rainy season increases by 20-30% compared to other months of the year. The main reason is due to:

  • Rainwater and mud affect electronic details and components
  • Water seeping into the engine compartment causes engine stalling and hydrostatic shock
  • Slippery roads can easily cause collisions and accidents
  • Poor visibility makes maneuvering more difficult

Therefore, to ensure safety and good operation during the rainy season, car owners need to carefully prepare their "darling cars". Here are the important things to do!

How to Take Care of Your Car During the Rainy Season
How to Safely Care for Your Car in the Rainy Season

Check and maintain before the rainy season

Ensure good visibility

The most important factor when driving in the rain is ensuring visibility. The following details need to be checked and processed:

  • Windshield and rearview mirrors: Clean and replace if cracked or blurred. Check glass cleaning, add specialized cleaning fluid if necessary.
  • Wipers: Replace if worn, making sure to wipe away rainwater. Check out features like automatic wipers and speed adjustment.
  • Headlights, taillights: Clean and replace light bulbs if necessary. Adjust the lighting angle appropriately.

Check the electrical system

Heavy rain causes the vehicle's electrical equipment to operate continuously and consume more electricity. Attention should be paid:

  • Check the wires, fuses, and electrical connections for open or short circuits.
  • Check the battery, replace it if it is too old. Make sure the battery is always fully charged.
  • Avoid letting water get into the engine compartment and electrical control boxes.

Check tires and brakes

Tires and brakes are two important details directly related to safety. Noteworthy:


  • Check tire wear, replace if worn beyond limit (1.6mm).
  • Check tire pressure regularly, pump to the recommended pressure (usually 30-32psi).
  • Rotate tires periodically to wear evenly and prolong life.


  • Check brake pads and brake discs, replace if worn beyond the limit.
  • Check brake fluid, replace if necessary.
  • Check the handbrake, the ABS brake works well.

Waterproof, anti-rust

Rainwater and mud that stays on the car for a long time will cause rust and damage. Attention should be paid:

  • Apply a layer of adhesive to protect the vehicle's underbody, gaps, and joints.
  • Waterproof silicone spray for rubber parts such as door gaskets, dashboard, fender braces.
  • Check and clean the rainwater drainage system such as door drainage pipes and sunroofs.
Driving Skills During Rainy Season
Need to Check and Maintain Vehicles Periodically

Driving skills and handling situations when it rains

To ensure driving skills and handle situations safely when it rains, you need to:

  • Adjust your speed appropriately and keep a safe distance from the vehicle in front. When it rains, the road is slippery, and when you brake suddenly, you can easily skid.
  • Turn on headlights when it's dark or foggy. Avoid overtaking vehicles when visibility is limited.
  • Avoid going into flooded areas. If you must pass, use a low gear, rev the engine high, and avoid letting water enter the exhaust pipe.
  • Handling when flooded or stalled:
  1. Turn off the engine immediately, remove the key.
  2. Do not try to start the engine again to avoid water entering the combustion chamber and causing hydrostatic shock.
  3. Contact rescue and tow the vehicle to a dry place for treatment.

National Highway Traffic Safety Administration (NHTSA - US National Highway Traffic Safety Administration): According to NHTSA's report, the number of accidents related to rainy weather accounts for 14% of the total annual traffic accidents in the US. . Of these, up to 36% of fatal accidents occurred on wet roads.

Car Maintenance During the Rainy Season
What Skills Are Needed to Drive in the Rainy Season?

Maintain and clean the vehicle after rain

After heavy rain, you need to take advantage of timely vehicle maintenance to limit damage:

  • Wash the car clean of mud and dirt, especially the gaps and undercarriage.
  • Clean the engine compartment and interior compartment and let it dry. Dry the electrical parts.
  • Run the engine for about 15 - 20 minutes to dry the engine.
  • If there are strange phenomena such as engine difficulty starting, error lights, oil leaks, you need to take the car to a garage for inspection as soon as possible.
What should you pay attention to when driving in the rainy season?
You Should Clean Your Vehicle After Going Out In The Rain

Most frequently asked questions when driving in the rainy season

1. Why is the rainy season in Saigon long and has heavy rainfall?

Saigon is located in the tropical monsoon climate zone, influenced by the southwest monsoon circulation from May to October every year. The southwest monsoon often brings abundant moisture from the sea, causing prolonged heavy rain, an average of 5 - 10 rainy days/year.

2. Which roads in Saigon are often heavily flooded during the rainy season?

Some heavily flooded roads during the rainy season in Saigon include:

  • Nguyen Huu Canh Street (Binh Thanh District)
  • Huynh Tan Phat Street (District 7)
  • Binh Loi Street, Ung Van Khiem (Binh Thanh District)
  • Le Duc Tho Street, Truong Chinh (Go Vap District)
  • Luong Dinh Cua Street, To Ngoc Van (District 2)

3. What parts of the car can be damaged by flooded water?

Flooding can damage many important parts of the car such as:

  • Engine: water entering the cylinder causes hydrostatic shock, damaging pistons and piston rings
  • Gearbox: water makes the oil thinner, reducing lubrication ability
  • Electrical system: water gets into sensors and electrical circuits, causing short circuits and fires
  • Interior: water seeps into leather seats and wooden floors, causing mold and damage

4. What should you pay attention to when driving through flooded areas?

When driving through flooded water, you should:

  • Assess the water level, only drive through if the water level is less than half the wheel
  • Drive slowly and steadily to avoid causing waves to enter the engine compartment
  • Shift to low gear and high rpm to avoid water entering the exhaust pipe
  • Turn on hazard warning lights and keep close to the right side
  • After passing the flooded section, check the brakes and dry the engine before continuing

5. What to do when your car is flooded and stalls in the middle of the stream?

When a car is flooded, loading the engine in the middle of the road must ensure:

  • Turn off the engine immediately and remove the key
  • Call for help, do not open the car door arbitrarily to avoid water flooding in
  • Pull the car to a dry place, remove the battery, and dry the engine compartment
  • Bring the car to the garage for a thorough inspection and repair
  • Contact insurance (if any) for support and compensation

For more details, read the article now 10 things to do when your car is flooded Fast and safe to help protect your car from more serious damage.

6. What should you check and maintain for your car before the rainy season?

Before the rainy season, it is necessary to check and maintain the following items for cars:

  • Tires: wear, pressure, location
  • Brakes: brake pads, brake fluid, ABS sensor
  • Wipers, glass cleaner
  • Headlights, taillights, fog lights
  • Batteries, electrical systems
  • Engine oil, gear oil
  • Steering, suspension, shock absorber system
  • Waterproof glue, moisture-proof silicone

Also, you can refer to these Pay attention to repairing and maintaining flooded cars safest and most effective.

7. How to adjust speed and distance when driving in the rain?

When driving in the rain, you should:

  • Reduce speed to 5-10km/h compared to normal conditions
  • Increase the distance with the vehicle in front by 2-3 times (50-100m)
  • Brake and accelerate gently, avoid rushing
  • Avoid overtaking vehicles when visibility is less than 100m
  • Turn on headlights when it's dark or foggy

8. How does heavy rain affect traffic in Saigon?

Heavy rain seriously affects traffic in Saigon:

  • Many roads were flooded 20-50cm deep, making it difficult for motorbikes and cars to circulate
  • Traffic jams lasted for hours at major intersections
  • Accidents and incidents increase due to poor visibility and slippery roads
  • Many flights, trains, and buses had to be delayed or canceled due to bad weather
  • Affects people's work and study

9. What are the warning signs that a car is having trouble after heavy rain?

After heavy rain, if your car has the following signs, it is having trouble:

  • The engine is difficult to start, jerky, and sluggish
  • Engine and transmission error lights are on
  • Brakes are mushy or unusually hard
  • There was a burning smell and smoke rising from the engine
  • Oil and water leaks under the car
  • The electrical system is unstable

When encountering the above phenomena, it is necessary to take the vehicle to a reputable garage for timely inspection and repair, avoiding serious damage and danger when traveling.

10. Does car insurance cover damage caused by rain or flooding?

Depends on insurance plan and company, but in general:

  • Physical insurance (body and shell) usually covers damage caused by water shock, electrical short circuit, collision, and accidents related to heavy rain.
  • Voluntary insurance and compulsory civil liability insurance only pay for accidents, not technical damage caused by rain.

Car owners need to carefully read the contract terms and consult the insurance company to clearly understand the scope of coverage. See article details: Does insurance cover the cost of repairing a flooded car?? shared most fully.

Above are important notes to protect cars during the rainy season. If you need further support or advice, please contact reputable garages and auto maintenance centers such as Thanh Phong Auto. With a team of experienced technicians and modern equipment, we will help keep your "car" in the best condition, ready for the rainy season.

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