Is it serious if the SVS light comes on in a diesel vehicle?

3 Answers
DelPhoebe
07/29/25 11:05pm
When the SVS light comes on in a diesel vehicle, it indicates that there is a problem with the engine, and it needs to be inspected and repaired at a 4S shop. Below is more information about the SVS indicator light: 1. How it works: When the ignition key is turned on, this light will illuminate and will turn off after the vehicle is started. When the engine ECU detects a fault, the SVS light will also come on. If this light comes on while the vehicle is in motion, it means there is a problem with the vehicle's engine. 2. The function of the SVS warning light: The SVS warning light is a fault indicator that alerts the owner when the ECU or TCU of an electronically fuel-injected vehicle detects an issue with the engine or automatic transmission. Whenever this light comes on, it is recommended that the owner take the vehicle to a repair shop for inspection as soon as possible.
Was this review help?
14
2
Share
VonMargaret
08/16/25 1:05am
If the SVS light comes on in my diesel car, I take it seriously immediately. The light usually indicates a problem with the emission system, such as a clogged particulate filter or a failed sensor. Once, I drove a long distance with the light on, and the engine power dropped sharply while fuel consumption skyrocketed, costing me an extra thousand bucks in repairs. This not only affects driving safety but also causes black smoke pollution on the road, which may result in fines. Therefore, I never wait—I head straight to a repair shop to scan the fault codes with an OBD scanner. Don’t push your luck by continuing to drive, as it can lead to more component damage, especially in diesel engines where problems worsen quickly, sending repair costs soaring. To prevent the SVS light from coming on, always use good-quality fuel and clean emission components regularly. Driving safety should always be the top priority—don’t take big risks to save a little money.
Was this review help?
15
0
Share
Expand All
BlakelyLee
10/18/25 6:42am
I've been driving a diesel car for several years, and the SVS light has come on a few times. Sometimes it's a minor issue, sometimes major. For example, one time when the light came on, I checked it myself with tools and found a slight air intake leak—fixed it for just a few dozen yuan, and it was fine. But another time, it was a fault in the after-treatment system, costing thousands to repair. The severity really depends on the situation. The light indicates the computer has detected an abnormality, so it shouldn't be ignored—continuing to drive could lead to performance degradation or sudden stalling. My advice is to pull over safely, check for other warning lights, and if there's no major issue, drive a short distance to the shop. From my experience, regularly replacing the air and fuel filters can reduce faults—don't wait for the light to come on before taking action; early handling saves money and hassle. Get into the habit of using diagnostic tools—small fixes are easier to handle early on, otherwise, delays can make things much harder.
Was this review help?
19
3
Share
Expand All
More Forum Discussions

What to Do If the Car Exceeds the First Maintenance Period?

The solution for a car exceeding the first maintenance period is: if it's overdue by about a month, the first maintenance can generally still be performed. The 4S dealership and manufacturer usually have a grace period for overdue first maintenance in terms of both time and mileage. The first maintenance is determined by two indicators: mileage and time, whichever comes first. It's not necessary to meet both conditions; exceeding either one can affect the first maintenance. The purposes of the first maintenance are: 1. To ensure the vehicle is in good performance condition; 2. To effectively improve the vehicle's efficiency and reduce wear on parts and tires; 3. To enhance driving safety; 4. To prevent vehicle malfunctions; 5. To reduce noise and environmental pollution; 6. To maintain the vehicle's appearance and prevent damage.
3
5
Share

Does the CR-V still have four-wheel drive?

CR-V still offers four-wheel drive, available in both pure gasoline and hybrid models. The CR-V is a compact 5-door, 5-seat SUV with dimensions of 4621mm in length, 1855mm in width, and 1679mm in height, a wheelbase of 2661mm, and a fuel tank capacity of 23 liters. In terms of suspension, it features a front MacPherson independent suspension and a rear multi-link independent suspension. For power, this vehicle is equipped with a 1.5T turbocharged engine, delivering a maximum power of 142 kilowatts and a maximum torque of 243 Newton-meters, paired with a 6-speed manual transmission.
9
2
Share

How to Turn on the Rear Air Conditioning in a Passat?

The method to turn on the rear air conditioning in a Passat is: Press the second button inside the middle knob of the central air conditioning control area. If the indicator light is on, the rear air conditioning is off; if it is not lit, the rear air conditioning is on. The independent rear air conditioning means that the rear seats can set a different temperature from the front seats and adjust the airflow volume. The Passat is a mid-size sedan under SAIC Volkswagen, with a length, width, and height of 4933mm, 1836mm, and 1469mm respectively, and a wheelbase of 2871mm. In terms of the suspension system, the front suspension uses a MacPherson independent suspension, and the rear suspension uses a multi-link independent suspension.
14
4
Share

How to Replace the Battery in a Zotye T300 Key Fob?

Method for replacing the battery in a Zotye T300 key fob: 1. Press the rectangular button located slightly below the center on the front of the key fob to remove the silver key head; 2. Insert half of the key head into the black casing, twist the key head slightly, and carefully pry open the casing until a gap appears; 3. Once opened, you will see a circuit board on one side and a coin cell battery on the other. Remove the old coin cell battery and replace it with a new one. The Zotye T300 is a compact SUV produced by Zotye Auto, with dimensions of 4405mm in length, 1830mm in width, and 1640mm in height, and a wheelbase of 2610mm. It is equipped with a 1.5L naturally aspirated engine, delivering a maximum power of 82kW, and comes with either a CVT transmission or a 5-speed manual transmission.
1
0
Share

What is the vehicle purchase tax?

Currently, excluding the 17% value-added tax, the vehicle purchase tax is 10%. Below is a detailed introduction about the vehicle purchase tax: 1. Vehicle purchase tax: The purchase tax is a tax levied by tax authorities on the purchase of related properties and assets within the scope of the purchase tax system. The vehicle purchase tax is a tax levied on units and individuals who purchase specified vehicles within China, and it evolved from the vehicle purchase surcharge. 2. Legal basis: According to the relevant provisions of the 'Interim Regulations of the People's Republic of China on Vehicle Purchase Tax,' starting from January 1, 2001, vehicle purchase tax is levied on units and individuals purchasing taxable vehicles. The vehicle purchase tax is levied on an ad valorem basis at a rate of 10%.
8
4
Share

How Thick Are Brake Pads?

Brake pads are approximately 1.5cm thick. As they wear down from friction during use, their thickness gradually decreases. Each brake pad has a raised indicator on both sides, which is about 2-3mm thick—this is the replacement limit for brake discs. The working principle of brake pads is to convert the kinetic energy of the moving vehicle into heat energy through friction between the brake pads and brake drum, as well as between the tires and the ground, thereby bringing the vehicle to a stop. Brake maintenance methods include: 1. High-temperature protection to prevent corrosion of the braking system and avoid brake pads seizing due to overheating; 2. Clean oil stains from brake discs and drum components to ensure proper heat dissipation; 3. Replace brake fluid regularly; 4. Periodically check the thickness of brake pads or brake shoes.
4
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.