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What to Do When the Oil Light on the Dashboard Comes On?

2 Answers

HectorRose

07/24/25 1:13pm

When a yellow light on the dashboard comes on during vehicle use, it indicates that the vehicle's engine requires maintenance or servicing. Generally, it is necessary to promptly visit a vehicle repair shop for maintenance or servicing. If a red light comes on, immediately go to a 4S shop for inspection and repair, as the fault is very serious. Reasons why the oil indicator light on the car dashboard comes on: 1. Excessive oil viscosity: The viscosity of the oil is closely related to its quality. The higher the viscosity, the stronger the oil's resistance to high temperatures, and vice versa. However, higher viscosity is not always better; the oil grade should match the engine. 2. Insufficient oil volume: If the oil volume is insufficient, the oil pump's pumping capacity will decrease, or it may fail to pump oil due to air entering, leading to a drop in oil pressure. This can cause increased wear on the crankshaft and bearings, as well as the cylinder liners and pistons, due to poor lubrication. 3. Malfunction of the oil bypass valve: The oil bypass valve maintains normal oil pressure in the main oil passage. If its pressure-regulating spring softens or is improperly adjusted, or if the valve seat and steel ball's mating surface wears out or gets stuck and fails to close tightly, the oil pressure will decrease.

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Morgan

08/11/25 7:18am

That day when I was driving out, the oil light suddenly came on, which gave me a scare. My first reaction was that I couldn’t keep driving and had to pull over immediately, because it indicated that the oil might be low or there was an issue with oil pressure. After stopping in a safe spot and turning off the engine, I popped the hood to check the dipstick—pulled it out, wiped it clean, and reinserted it to check the oil level. If the level was low, I’d grab the spare oil from the trunk and add some, but not too much to exceed the upper limit. After adding, I’d wait a few minutes, then restart the car to see if the light went off. If it didn’t go off or there was no spare oil to add, I’d call for a tow truck to take it to a repair shop. Never force yourself to keep driving—it could burn out the engine and cost thousands to fix. Make it a habit to check the oil level every month; oil pan leaks are also a common cause, so catching it early saves money and hassle.

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More Forum Discussions

Can vehicles undergo annual inspection in other regions?

Currently, the traffic management authorities have fully implemented cross-provincial inspection services for small cars, trucks, and medium-sized buses. Applicants can directly undergo inspection in provinces other than the vehicle's registration location and obtain the inspection qualification mark without needing to apply for an entrusted inspection procedure. However, large passenger buses and school buses cannot be inspected in other regions and must return to the vehicle's registered location for inspection. Annual inspection process: Check whether the engine, chassis, body, and their auxiliary equipment are clean, complete, and effective; whether the paint surface is uniform and aesthetically pleasing; whether the main assemblies have been replaced and match the initial inspection records; whether the vehicle's braking performance, steering control, lights, exhaust, and other safety performance meet the requirements of the "Technical Conditions for Safe Operation of Motor Vehicles". Check whether the vehicle has been modified, remodeled, or transformed; whether the driving license, license plate, and all vehicle file registrations match the actual condition of the vehicle and whether any changes have been made; whether approval and change procedures have been completed. Check whether the license plate, driving license, and the enlarged license plate print on the vehicle are damaged, altered, or unclear, and whether replacement is needed. For large vehicles, check whether the unit name or the name of the street, township, or town where the vehicle is located and the maximum number of passengers allowed in the driver's cabin are printed in Chinese imitation Song font on both sides of the door as required. For trucks, check whether the rear fender (including the trailer's rear fender) has the vehicle number printed in 2~3 times larger size as required; for individual or joint-operation vehicles, check whether the word "individual" is printed on both sides of the door. The print must be clear, and printing unit codes or other patterns is not allowed (special cases require approval from the vehicle management office).

What procedures are required for changing the vehicle frame number?

To change the vehicle frame number, the vehicle owner or their agent must submit the following documents and present the vehicle for inspection within ten days after the change: "Application Form for Vehicle Modification/Registration", the original identity proof of the vehicle owner, the vehicle registration certificate, the vehicle license, and the vehicle inspection record form. If the process is handled by an agent, the original and a copy of the agent's identity proof must also be submitted, along with the original and a copy of the handler's identity proof, and a written authorization from the vehicle owner. The vehicle management office should, within one day of acceptance, verify the vehicle, review the submitted proofs and certificates, annotate the modification on the vehicle registration certificate, reclaim the vehicle license, and reissue a new vehicle license. For the modification registration items specified in Article 10, Paragraph 1, Items (3), (4), and (6) of these regulations, the vehicle management office must verify the vehicle identification number imprint. Article 16 of the "Road Traffic Safety Law of the People's Republic of China" prohibits any unit or individual from engaging in the following activities: Assembling a motor vehicle or altering the registered structure, construction, or characteristics of a motor vehicle without authorization. Changing the model number, engine number, frame number, or vehicle identification number of a motor vehicle. Forging, altering, or using forged or altered motor vehicle registration certificates, license plates, vehicle licenses, inspection qualification marks, or insurance marks. Using the registration certificate, license plate, vehicle license, inspection qualification mark, or insurance mark of another motor vehicle.

What is the maximum wading depth of the Tiguan?

The maximum wading depth of the Tiguan is 580mm. The wading depth of the Tiguan is determined by the height of the vehicle's chassis, which is the ground clearance listed in the model's parameter configuration table. Generally, the greater the ground clearance, the higher the chassis, and the higher the safety factor when driving through waterlogged roads. Therefore, in terms of safe wading depth, the advantages of off-road vehicles and SUVs are obvious. However, for most compact and small cars with low chassis, the position of the vehicle's air intake should be used as a benchmark when passing through waterlogged roads. If the air intake of the Tiguan is below the water level during wading, water will be sucked into the engine's cylinders. Since water cannot be compressed like air, it will cause severe damage to the engine's mechanical components (such as connecting rods, pistons, crankshafts, etc.). Therefore, the wading depth should not exceed the height of the engine's air intake. The height of the engine's air intake, and thus the maximum wading depth, can also be increased by installing a snorkel. If wading is unavoidable, the following safe and correct operations should be performed: Before driving through water, always turn off the auto start-stop function to prevent the engine from automatically restarting if the vehicle stalls in the water, which could cause severe damage due to water entering the engine. Assess the underwater road conditions based on the passage of vehicles ahead and choose a suitable entry point. Observe the path taken by other vehicles and follow their tracks at a low speed, avoiding sudden acceleration or deceleration. For roads prone to water accumulation, observe warning water level markers, trees, or other reference points such as the wheels and doors of other vehicles to estimate the water depth before deciding whether to proceed. Be aware of your vehicle's safe wading depth. If the water depth exceeds half the height of the tires or the engine's air intake, do not proceed and choose an alternative route instead.

What engine does the Hongqi H7 use?

Hongqi H7 is equipped with engines independently developed by China FAW Group, with model numbers CA6GV and CA4GC20T. The relevant introductions of CA6GV and CA4GC20T are as follows: 1. As a high-end V6 engine, CA6GV adopts VIS variable volume chamber and variable length plastic intake system, combined with VVL technology, ensuring advanced fuel economy and ultra-low emission levels. The perfect combination of an advanced two-stage three-layer silent chain drive timing system and low-noise optimized design creates an extremely quiet experience. 2. CA4GC20T achieves technological breakthroughs in overall layout, structural strength, vibration and noise, fuel supply system, and vehicle matching. The leading multi-point electronic injection and turbocharged intercooling technology significantly enhance horsepower output and fuel utilization while greatly reducing exhaust emissions.

How to Charge New Energy Vehicles Without Damaging the Battery?

Use the original charger for charging and unplug it immediately after it is fully charged. Here is more information about new energy vehicles: 1. Introduction: New energy vehicles refer to vehicles that use unconventional vehicle fuels to provide power. They can be divided into four main types: pure electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, and other new energy electric vehicles. The advantage they can achieve is zero tailpipe emissions. 2. New energy vehicle license plates: Small new energy vehicle license plates are gradient green, while large new energy vehicle license plates are yellow-green dual-color. Compared to traditional vehicle license plates, new energy vehicle license plates have one more digit, which can effectively distinguish vehicle license plates and avoid duplication.

Can the car start and drive if water enters the exhaust pipe?

If water enters the exhaust pipe, the car can still start and drive. Here is an introduction to car engines: 1. Introduction: An engine (Engine) is a machine capable of converting other forms of energy into mechanical energy. 2. History: The first external combustion engine was invented by R. Stirling in the UK (Scotland) in 1816, which was later improved by Watt into a steam engine. 3. Applications: Engines can be used as power generation devices or refer to the entire machine including the power unit (e.g., gasoline engines, aircraft engines). Types include internal combustion engines (such as gasoline engines), external combustion engines (such as Stirling engines, steam engines), gas turbines (used in racing cars), electric motors, etc.

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