The Reasons For Car Leaking Water On Passenger Side

There are numerous types of liquids in your car – from gasoline in the engine tank to radiator fluid and coolant oil. So, leaking of fluid is not actually surprising given the volume of liquid a vehicle holds. In addition, the car sometimes appears to be leaking water but actually is not. But, you should pay attention when a car leaking water on passenger side.

The Reasons For Car Leaking Water On Passenger Side

A car needs different types of liquids to operate but only two systems use water-based fluids. These are the engine cooling and windshield washing systems.

When there is water on the passenger side of the car, investigate these two areas:

1. The Cooling System Of The Engine

This is the first place to start the investigation when you see a car leaking water on passenger side. The cooling system is highly pressurized so even a small leak can force the antifreeze to come out.

Also, the heating and cooling cycles can deteriorate the gaskets and wear out the seals and hoses.

SEE MORE:

• The Mysterious Case of Losing Coolant without a Leak
• Signs and Causes of Leak in the Steering Rack and Pinion

2. The Washing System Of The Windshield

The entire system consists of a reservoir, a pump, hoses, and nozzles. The reservoir stores the washing fluid and the pump pumps it to the hoses. Then, the hoses carry it to the nozzles, which spray the liquid on the windshield.

A crack in the reservoir is the most common reason for the leaking. It happens because of the extreme pressure from the expanded frozen washer fluid.

You have to install a new reservoir to solve the problem. Use a low-freezing point washer fluid to avoid it altogether.

Remember that the water will leak only when you use the washer. If you find the car leaking water on passenger side after using the system, you will know where to look.

My Car Is Leaking Water Into The Passenger Side Floor When It Rains

Why does rainwater leak inside to the passenger side? Well, there could be several reasons.

• Clogged sunroof drains or loose drain hose. If your car has a sunroof, check its drainage system for these oddities. The problems will make water leak into the car instead of trickling outside.
• The heater core could be the culprit too. Check if the dripping liquid smells like coolant. In this case, the car will be overheating or the coolant level will be low.
• A blocked drain in the air conditioning system or air vent. The passenger floor is the end point of these drains.

If you suspect that rainwater is leaking through any of the seals, you can do a water test to find out the problematic spot. 

Find an assistant to sprinkle water on the car while you stay inside, trying to figure out the leak. Start at the low point like the door cracks to the bottom of the windshield and work your way up to the roof.

The testing is time-consuming but it is the most cost-efficient way to find the troubling spot when a car leaking water on passenger side.

FAQs

1. Can a blocked sunroof drain cause water to leak on the passenger side?

Yes, a blocked sunroof drain is a common cause of water leaks. When the drain tubes get clogged, water can overflow and enter the passenger compartment, leading to leaks.

2. What should I do if I suspect my car is leaking water on the passenger side?

First, locate the source of the leak by inspecting the affected area. Check for damaged seals, blocked drains, or rusted body panels. If you’re unsure, it’s best to consult a mechanic for a professional assessment.

3. Can a damaged windshield seal cause water leaks on the passenger side?

A damaged or improperly sealed windshield can allow water to enter the car. If you suspect this is the issue, have a professional inspect and reseal the windshield.

4. Is it dangerous if water is leaking into my car?

While water leaks themselves may not be immediately dangerous, they can lead to issues like mold growth, electrical problems, and interior damage over time. Addressing leaks promptly is essential to prevent these secondary issues.

5. How can I prevent water leaks on the passenger side of my car?

Regular maintenance is key. Keep sunroof drains clear, inspect weather seals, and address any rust or body damage promptly. Parking your car in a garage or under cover during heavy rain can also help prevent leaks.

6. Can a malfunctioning air conditioning system cause water leaks in the car?

A malfunctioning AC system can cause condensation to build up, leading to water leaks. If you suspect this is the issue, have your AC system inspected and repaired by a professional.

7. Is fixing water leaks on the passenger side expensive?

The cost of repairs depends on the cause and severity of the leak. Some issues, like clearing blocked drains, may be relatively inexpensive, while others, such as replacing a damaged windshield, can be more costly. It’s best to get a repair estimate from a qualified mechanic.

8. Can I temporarily fix a water leak myself, or should I always consult a professional?

Simple issues like clearing clogged drains can sometimes be addressed by car owners.

However, for complex problems or if you’re unsure about the cause, it’s advisable to consult a professional mechanic or auto technician to ensure a proper and lasting fix. Temporary fixes may not solve the underlying issue.

Check out this video from 1D10CRACY to learn how to fix wet floor on the passengers side for good!

Conclusion

When a car leaking water on passenger side, it typically stems from various factors such as blocked drainage systems, deteriorated seals, or other related issues.

It is crucial to promptly diagnose and address these potential causes to ensure the ongoing safety and comfort of your vehicle.

To that end, regular maintenance practices, such as clearing clogged drains and inspecting seals, play a pivotal role in preventing water leaks!