Reasons Why 4S Stores Do Not Recommend Installing Cruise Control

[Nevaeh]

When purchasing a vehicle, some car owners request 4S stores to install cruise control. However, some 4S stores advise against it because installing a cruise control system is different from installing other vehicle accessories. The cruise control system needs to be connected to the engine control circuit, car airbags, and the central console. Such modifications can alter the original vehicle's wiring and circuits, and improper installation may even damage the car. Cruise control, also known as speed control or autonomous driving system, automatically maintains the vehicle's speed as set by the driver without the need to press the accelerator pedal, allowing the car to travel at a constant speed. Disadvantages of cruise control: The system may malfunction, which can be extremely dangerous if it occurs during high-speed driving. Cruise control is only suitable for use on highways or long-distance routes with light traffic and cannot be used on roads with complex conditions. When using cruise control, the driver's foot is freed from the accelerator pedal, leading to relaxation and reduced focus. In emergency situations, this may delay braking response, resulting in untimely braking.

[RowanAnn]

Having run an auto repair shop for over a decade, I know exactly why 4S stores refuse to install cruise control. Their biggest fear is safety hazards from unauthorized modifications - this device needs wiring into the steering wheel electronics, engine ECU and brake modules, where any misstep could interfere with vehicle control logic. Manufacturer-authorized shops must comply with vehicle type certification requirements, and aftermarket installations violate compliance. Moreover, 4S stores would bear full liability if accidents triggered investigations. I've witnessed cases where clients installed it at roadside shops resulting in brake failure with no recourse for claims - terrifying stuff. If you really need this feature, I recommend opting for factory-equipped higher trim models directly - hassle-free and safe.

[MacNathan]

As a seasoned player who frequents modification forums, I've researched this issue. Installing cruise control in regular car models requires tapping into the vehicle's computer wiring, which is a ticking time bomb for 4S shops. They rely solely on factory warranties for profits - any post-modification issues like system freeze during highway cruising would inevitably lead to customer claims, tarnishing their reputation. Nowadays new cars come with OBD port locks that reject non-OEM parts. A member in our car club tried DIY installation only to trigger error codes that disabled power steering. My advice for modification enthusiasts: first check local traffic regulations - some regions impose penalty points for such modifications.

[DelZane]

Last time when I accompanied my buddy to the dealership to install cruise control, we got rejected. The salesperson privately explained several key points: First, there's legal risk - modifications involve tampering with safety systems, which violates national vehicle safety technical standards and would definitely fail inspection. Secondly, it voids the whole vehicle warranty agreement - manufacturers can refuse claims if engine or transmission issues arise. Finally, there's technical difficulty - wiring harness layouts differ for each car model, requiring specialized technician training, and their shop simply didn't have authorized toolkits. They recommended directly upgrading to a higher trim instead - though more expensive, it eliminates future worries. Thinking back now, safety-related modifications indeed require caution.

[StellaMarie]

Anyone who has worked in the transportation department knows that 4S shops refuse installations primarily to avoid disputes. China's vehicle management regulations explicitly prohibit unregistered modifications to core systems. Functions like cruise control that involve powertrain management fall under the category of illegal modifications. If a customer gets into an accident after installation, the 4S shop bears joint liability during accident responsibility assessment, and they lose most lawsuits. Additionally, it affects the compatibility of the vehicle's electronic systems - even dashboard light controls might malfunction in some premium vehicles. If you really need cruise control, it's better to spend a few thousand yuan renting a car equipped with this feature for long trips.