How to Turn Off the 120km/h Speed Limit on Haval M6?

[MacViolet]

Haval M6 method to turn off the 120km/h speed limit: First, locate the speed limit switch on the car's steering wheel. The buttons on the right side of the steering wheel control the instrument panel. Use the up and down buttons to find the speed limit alarm setting interface. After entering the interface, click to cancel. When the car's speed limit is activated, the vehicle will sound an alarm when exceeding the set speed limit. There are two types of alarms: the speed limit warning light on the dashboard will flash or an audible alarm will sound. The Haval M6 is a compact SUV under the Haval brand and serves as Haval's entry-level model. It is equipped with a 1.5T turbocharged engine that meets the China VI emission standards, featuring high configuration, spacious interior, and strong safety. The vehicle's dimensions are 4649mm in length, 1830mm in width, 1705mm in height, with a wheelbase of 2680mm.

[Anna]

The Haval M6's factory default speed limit of 120 km/h is a protective program set by the onboard computer. To truly remove it, you need to visit a professional tuning shop to flash the ECU program. Last time my friend went for this service, it cost him 800 yuan. The technician used a diagnostic tool to rewrite the parameters, and it did remove the limit. However, be warned: after removal, exceeding 120 km/h will trigger an alarm sound, and the tire grip may not be sufficient, which is dangerous. Additionally, it's safer to restore the original settings during annual inspections, as getting caught with modified driving parameters can be troublesome. It's advisable to evaluate carefully before proceeding.

[VivianAnn]

From a safety perspective, I advise against hastily removing the speed limiter. The manufacturer set the 120 km/h limit after considering factors like chassis tuning and body rigidity. I've personally experienced noticeably increased body vibrations at 120 km/h. The car tends to feel particularly unstable during turns. In emergency avoidance situations on highways, vehicles exceeding speed limits become significantly harder to control. For regular highway driving, using ACC cruise control is sufficient - safety parameters outweigh marginal speed gains. If you truly desire better performance, consider upgrading your suspension system instead.

[ZoeyLee]

Based on my experience, I don't recommend tampering with the factory speed limiter. Last time when helping a friend remove the speed limit from his vehicle, we ended up frying two control modules, costing over 3,000 yuan in repairs. The Haval ECU system is quite sensitive - aftermarket modifications often trigger warning lights and may even cause airbag sensor malfunctions. Nowadays, manufacturers won't cover warranty claims for modification-related issues during the new car warranty period. It's better to drive as-is. If you really want better acceleration, upgrading to a high-flow air filter is a more practical solution.

[Julia]

To temporarily lift the speed limit is quite simple: switch to manual mode and use the paddle shifters! I often do this on long drives. While in D mode, shift right to switch to M mode, keep an eye on the tachometer and upshift before it hits 5000 RPM—personally tested to reach around 135 mph. However, this method significantly increases fuel consumption and engine noise. Remember to switch back to D mode to restore the electronic speed limiter, as prolonged high RPMs can damage the transmission. Never attempt this in tunnels or during rainy conditions.

[VonDakota]

As a seasoned driver, here's a practical solution: there's no need to remove the speed limiter at all. The maximum speed limit on China's highways is 120 km/h, and this setting is perfectly adequate. Real-world tests show that even with a full load and air conditioning on, reaching 120 km/h is effortless, and deep pressing the accelerator provides enough power for overtaking. If you occasionally need to overtake, simply use the S-mode (Sport mode), where downshifting for acceleration is safer than removing the speed limiter. Regularly checking tire pressure is more practical than tampering with the ECU—a difference of just 0.3 in tire pressure can affect handling stability.