What are the problems with water-damaged BMWs?

1 Answers
McAlyssa
07/29/25 3:32pm
Problems that may occur with water-damaged BMWs: Moldy interior: The most obvious and superficial issue with water-damaged vehicles is that the car's interior is highly susceptible to mold growth. Interior components are mostly made of water-absorbent materials, and rainwater contains numerous impurities and bacteria. The relatively enclosed and poorly ventilated interior space results in extremely high humidity after water exposure. In such an environment, the car's interior is prone to mold growth. If interior components are not promptly cleaned and dried, mildew spots may appear on fabric and leather surfaces, not only affecting appearance but also causing odors and increasing environmental bacteria. Engine damage: In reality, among car components, the engine has excellent sealing performance. Even if the vehicle is water-damaged, as long as the engine's air intake is not submerged, the likelihood of water entering and damaging the engine internally is minimal. However, many people may attempt to start the car and drive it out of the waterlogged area without confirming whether the engine has taken in water. If water has already entered the engine, forcing it to start can cause severe deformation of the connecting rods. Insurance companies often deny claims in such cases. Transmission failure: Unlike the engine, the transmission has numerous vent holes designed to relieve pressure from temperature changes during manufacturing, resulting in very poor sealing. If the water level rises above the engine compartment, the transmission is highly likely to take in water. Once water enters the transmission, the vehicle may experience issues like slipping, shaking, or rough shifting, potentially shortening the transmission's lifespan or even rendering it unusable. Electronic system failure: The electronic system is the most water-sensitive and widely distributed system within a car. Although most vehicles today have waterproof treatments for electronic circuits during production, the effectiveness of such treatments is very limited. When water remains above the engine compartment for an extended period, the wiring in the electronic system may gradually corrode, leading to short circuits. At this point, the failure of certain electronic devices or functions is normal. If damaged electronic system components are not replaced during repairs after a water damage incident, the vehicle may experience spontaneous combustion during subsequent driving, posing a threat to the safety of passengers.
Was this review help?
13
4
Share
More Forum Discussions

Where is the Besturn B70 engine manufactured?

The Besturn B70 engine is independently developed and manufactured by FAW (First Automobile Works) in China. The engine model is CA4GB15TD30. The Besturn B70 is a mid-to-high-end fashionable sports sedan. Taking the Besturn B70 2021 1.5T Automatic Yuxiang model as an example, it is equipped with a 1.5T 169-horsepower L4 engine and a 7-speed dual-clutch transmission. The maximum power of the Besturn B70 2021 1.5T Automatic Yuxiang model is 124 kW, the maximum torque is 258 N·m, the maximum power speed is 5500 rpm, and the maximum torque speed is 4350 rpm. Its body dimensions are 4810 mm in length, 1840 mm in width, and 1455 mm in height, with a wheelbase of 2800 mm.
6
4
Share

Will leaving automatic headlights on consume power?

Leaving automatic headlights on will consume power, but the power consumption won't be too high. Car headlights, also known as car front lights or car LED daytime running lights, have common light signals: 1. Flash headlights once: This is often used at intersections waiting for traffic lights or when overtaking to alert the vehicle ahead; 2. Flash headlights twice: When meeting another vehicle at a relatively long distance, flashing headlights twice reminds the other party to switch lights when passing; 3. Flash headlights three times: While driving, if you notice something unusual with an oncoming vehicle that the driver hasn't noticed, you can flash your headlights three times as a warning. If another vehicle flashes its headlights three times at you, it's recommended to stop and check your vehicle's condition.
10
2
Share

How to Turn Off Cruise Control in MG ZS?

When driving above 40 km/h, press the switch to activate the system. Pushing it upwards increases speed, while pushing it downwards decreases speed. After braking and releasing the brake pedal, the vehicle will automatically accelerate to the preset speed. Below is more information about cruise control: 1. Function: The Cruise Control System (CCS), also known as speed control or autonomous driving system, allows the vehicle to maintain a set speed without the driver needing to press the accelerator pedal after activating the switch. 2. Working Principle: The cruise control system operates by comparing the pulse signals from the speed sensor with the preset speed. Based on this comparison, it sends commands to the servo mechanism to adjust the throttle opening, either increasing or decreasing it, ensuring the vehicle maintains the set speed.
6
0
Share

Where to Check the Production Date of Car Windshields?

Car windshield production dates can be found in the lower right corner of the front windshield. Car windshields are essential body accessories that primarily serve a protective function. There are mainly three types of car windshields: laminated glass, tempered glass, and zoned tempered glass. Laminated glass is a glass product made by bonding two or more layers of glass with one or more layers of transparent adhesive material. Tempered glass undergoes a process where low-temperature, high-speed air currents uniformly quench the glass, creating tensile stress inside the glass and compressive stress on the outer surface, resulting in the treated glass product. Zoned tempered glass is heated in a furnace to near its softening temperature, then rapidly transferred to air grids with varying cooling intensities for uneven cooling, creating different stresses in the main viewing area and the peripheral areas, resulting in the treated glass product.
4
4
Share

Do all 4S stores have car delivery ceremonies?

4S stores generally have car delivery ceremonies. Here are the details: 1. Specific activities: The 4S store car delivery ceremony involves scheduling the car pickup time, welcoming the customer upon arrival, providing hospitality, explaining the car delivery steps, requiring customer approval, forming a team to congratulate collectively, taking a car photo with the owner, and tying red flowers on the car. During the delivery, some functions of the car will be explained, the car will be cleaned inside and out, and the exterior paint, metal parts, interior, and electronic systems will be checked for any damage or malfunctions. It will also be confirmed that the accompanying documents, maintenance manual, and instructions are complete. 2. Reasons: It is a way for 4S stores to please consumers, complete the vehicle procedures, and promote sales.
2
3
Share

What's the reason for abnormal noises under the car?

Abnormal noises under the car may be caused by suspension system noises, constant velocity joint noises, wheel hub bearing noises, exhaust pipe noises, etc. Overview of automobile wheel hubs: The wheel hub (Car-Rim) is the central part of the wheel where the axle is installed, also known as the "wheel rim" or "steel rim". Wheel hubs are prone to accumulating dirt, and if not cleaned for a long time, they may corrode and deform, creating potential safety hazards. Classification of automobile wheel hubs: Wheel hubs can be divided into steel wheel hubs and alloy wheel hubs based on material, each with its own advantages and disadvantages. The main advantage of steel wheel hubs is their simple manufacturing process (generally using casting techniques, while aluminum alloy wheel hubs typically use low-pressure casting processes), relatively low cost, and strong resistance to metal fatigue.
7
1
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.