···
Log in / Register

What's the reason for Lexus' reduced braking force and failure to start?

4 Answers
OEloise
07/28/25 8:43pm
Lexus' reduced braking force and failure to start can be attributed to the following reasons: 1. Dead battery: Sometimes when you wake up in the morning and find that the car cannot start normally, it is likely because the trunk was not completely closed, causing the trunk light to stay on and drain the battery. 2. Spark plug failure: Spark plugs themselves are prone to damage, and short circuits in high-voltage lines can prevent the spark plugs from igniting. Additionally, poor-quality spark plugs can also lead to startup failure. 3. Starting circuit malfunction: If there is only a slight 'click' sound when starting and no further response, this is caused by a stuck starting relay. In this case, simply pressing the tail of the electromagnet to force it forward can connect the starting circuit, thereby allowing the engine to start.
Was this review help?
10
5
Share
WalterDella
08/12/25 12:24am
Well, I've been driving a Lexus RX for several years and have encountered this kind of situation where the braking force decreases along with the engine not starting. It happened last month, I remember the brake pedal felt spongy and lacked power when pressed, and I tried several times but couldn't start the engine. After checking the brake fluid, I found it was almost dry, possibly due to a leak in the pipeline or an aging oil pump. As for the starting issue, it was probably the battery giving out or the starter motor getting stuck. These high-end cars have a lot of electronic systems, and sometimes false alarms from the ABS sensor can also drag down the braking force. Safety first, so I immediately called for a tow truck. At the dealership, they checked it out and replaced the brake components and the battery—spending a little to avoid big risks. My advice is not to force-start the car; instead, use a multimeter to check the battery voltage. If it's below 12V, replace it. Then, check the brake pads and fluid level. Don't try to save money by doing it yourself; leave it to professional technicians for peace of mind.
Was this review help?
12
0
Share
Expand All
OPaul
09/30/25 7:45am
As a car enthusiast, I'm quite familiar with luxury brands like Lexus. Weakened braking force may stem from the brake system, such as worn brake discs or insufficient pump pressure, affecting ABS functionality. Starting issues often result from unresponsive key fobs or faulty start buttons, which are more common in hybrid models. I've had similar experiences—try checking the fuse box in the engine compartment for any blown fuses or restart the system by turning off the key and waiting a few minutes before trying again. Also, don't forget the vehicle's safety mechanisms; if it detects brake issues, it may automatically lock the starting function. Quickly grab an OBD scanner to read the error codes—it won't cost much to fix. Don't delay too long, or you might end up without brakes on the highway, which is dangerous. Call a tow truck to take it to an authorized repair shop—safety comes first.
Was this review help?
19
2
Share
Expand All
McArthur
11/14/25 2:49am
Don't panic when encountering this situation. I've been driving a Lexus for many years. In short, reduced braking force is often caused by insufficient brake fluid or air in the lines, while starting issues are mostly due to a dead battery or loose wiring harness. Check the following: first, see if there are any warning lights on the dashboard, such as the handbrake light being on; try starting the car a few times, and if there's no response, measure the battery voltage. If it's not a major issue, charging or jump-starting might solve the problem. For braking force, feel the thickness of the brake pads—if they're too thin, they need replacing. In an emergency, just call the 4S shop for a tow truck; they're professionals, and spending a little money can save you a lot of hassle. Don't try to fix it yourself—safety comes first.
Was this review help?
2
5
Share
Expand All
More Forum Discussions

Must You Avoid Rolling Down Windows for Three Days After Tinting?

After applying car window tint, it is advisable to avoid rolling the windows up and down for several days, as the newly installed tint film requires 5-7 days to firmly adhere to the window. During this period, the film, which hasn't fully bonded, is prone to shifting. Additionally, the following precautions should be noted: 1. Avoid washing the car: It's important to refrain from washing the car within the first three days after tinting to prevent the film from peeling off due to moisture. 2. Defroster lines: Try not to use the rear window defroster for about a week. After tinting, you may notice a foggy appearance caused by water vapor—this is a normal part of the drying process. Excess moisture can also negatively affect the defroster lines. During this time, you can gently clean the tinted surface with a damp towel, sponge, or soft cloth. Moreover, the foggy appearance will gradually fade over time.
16
5
Share

What is the difference between a mechanical torque-sensing limited-slip differential and a Torsen differential?

Here are the differences between a mechanical torque-sensing limited-slip differential and a Torsen differential: 1. Nature: The Torsen differential functions as a differential when the differential torque inside is small, but automatically locks when the differential torque becomes too large, effectively improving the vehicle's off-road capability. Off-road vehicles with only electronic limited-slip are suitable for icy roads and light off-roading but not for extreme off-road conditions. 2. Principle: The Torsen differential operates based on the high internal friction torque (Mr) of the worm gear transmission pair for torque distribution. The internal friction torque (Mr) depends on the relative speed of the output shafts at both ends. When the speed difference between the two output shafts is small, the friction of the worm driven by the rear worm gear is also minimal. The differential spur gear absorbs the speed difference between the two output shafts. The mechanical limited-slip differential prevents tire slippage through mechanical principles, distributing driving force evenly to all four tires. Such off-road vehicles can handle high-intensity and prolonged off-road conditions, making them the most rugged off-road vehicles available.
19
5
Share

What brand is hfbos tire?

hfbos tire is a brand of Kumho Tire from South Korea. The history of Kumho Tire dates back to 1960. Currently, it has become one of the world's largest tire manufacturing enterprises. Kumho Tire has a complete production line, covering various categories such as passenger car tires, commercial vehicle tires, and high-tech tires. The following are the subsidiaries of Kumho Tire: 1. Kumho (China) Tire Sales Co., Ltd.: In May 2006, Kumho established a sales company in Shanghai, China, fully responsible for the sales of products from Kumho's four factories in China, implementing the separation of production and sales. 2. Kumho Tire Tianjin Factory: Adhering to the principle of 'Green Enterprise,' Kumho Tire Tianjin Factory strictly implements dust pollution prevention measures to ensure that all pollution emissions meet national environmental standards.
13
4
Share

Where is the fog light located on a car?

Car fog lights are located below the headlights, at the lowest part of the bumper closest to the ground. Fog lights are divided into front fog lights and rear fog lights. The fog light activation button is on the light control stalk. Locate the fog light symbol position and rotate the control ring to turn on the fog lights. The fog light switch has three positions: position 0 is off, the first position controls the front fog lights, and the second position controls the rear fog lights. When one position is engaged, the front fog lights work; when two positions are engaged, both front and rear fog lights operate together. The purpose of fog lights is to make the vehicle visible to others in conditions of reduced visibility such as fog or heavy rain, so fog light beams need to have strong penetration capability.
5
5
Share

What is the Impact of Unsprung Mass on Vehicle Performance?

Unsprung mass affects vehicle acceleration and handling. Below is an introduction to the relevant content: 1. Performance Enhancement: If a car is compared to a sprinter, then the unsprung mass is like running shoes—the lighter the shoes, the faster the sprinter runs. By replacing heavy components with lightweight aluminum alloy wheels and suspension parts (such as control arms and rocker arms), the unsprung mass can be effectively reduced, thereby improving the vehicle's acceleration and handling performance. 2. Other Effects of Unsprung Mass: When a vehicle is driven on the road, the suspension system continuously absorbs impacts from the road surface. The ideal comfort state for passengers is when the vehicle body remains relatively stationary to the road surface while the wheels move up and down with the road conditions. Achieving this purely through mechanical structures is nearly impossible, but by increasing the ratio of sprung mass to unsprung mass, the vehicle can come closer to this ideal driving state.
2
3
Share

What is the purpose of road width transition markings?

The purpose of setting road width transition markings is to alert drivers that there will be intersections, crosswalks, or other crossing facilities ahead, requiring them to slow down or stop to yield. Specific functions of road width transition markings: When vehicles pass through sections with longitudinal deceleration markings, drivers will visually perceive the lane gradually narrowing. This serves as a reminder for drivers to increase their attention, take deceleration measures in advance, and drive slowly. It helps prevent situations where drivers abruptly brake when approaching the stop line, avoiding potential accidents. These markings effectively prevent sudden braking by motor vehicle drivers before reaching the stop line. Pedestrians on crosswalks can clearly sense vehicles yielding, thereby feeling safer, reflecting a harmonious traffic environment between pedestrians and vehicles. Appearance of road width transition markings: Longitudinal deceleration markings consist of a series of diamond-shaped dashed lines parallel to the lane boundary lines. At the starting position of these markings, a 30-meter transition section is set, where the diamond-shaped dashed lines gradually widen from 10 cm to 30 cm. These markings are one of the new additions to the national standard for road traffic markings (GB5768.2-2009).
19
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.