What are the reasons for a car's one-button start not working?
4 Answers
The reasons for a car's one-button start not working are: 1. The gear is not in P position; 2. The key's radio waves are being interfered with; 3. The brake pedal is not pressed; 4. Quality issues with the car itself. The functions of the one-button start include: 1. Enabling start and shutdown; 2. Fully intelligent sensing start; 3. Intelligent sensing entry; 4. Intelligent sensing door closing; 5. Smart identity recognition between the driver and the car; 6. Anti-theft design that cuts off fuel and power. The steps to start the car with one-button start are: 1. When the driver sits in the cockpit, press the start button for the car to perform a self-check; 2. Press the brake pedal and press the one-button start button to ignite; 3. Press the foot brake, shift to D gear, and release the handbrake to start.
That time when the client urgently needed to go on a business trip, their car suddenly wouldn't start. I rushed over with a diagnostic tool and found the battery voltage had dropped to only 8V. The one-button start system is actually highly dependent on the battery's condition. If the battery is aging or if there are devices in the car that continue to draw power after the engine is off, it can cause insufficient starting voltage. Also, it's important to check the key fob's battery. Last year, while helping a neighbor fix their car, I encountered a situation where the coin battery in the remote key was dead. Another small detail is that the brake pedal needs to be fully depressed; some automatic transmissions won't start if the brake isn't pressed all the way down. Not shifting back to the P position is also a common mistake. If none of these are the issue, you might need to check the corresponding relay in the fuse box or see if the starter motor's carbon brushes are worn out. It's practical to keep an emergency jump starter in the trunk.
Spent the weekend studying my friend's car that wouldn't start, and realized how complex keyless ignition systems actually are. The core failure points usually fall into three categories: First is the power system issue - dead battery being the most common; I've encountered new cars that went flat after just two weeks parked. Second is key fob recognition problems, either due to damaged chips or interference (keeping it near phones often causes malfunctions). Lastly, there's the vehicle control module - faulty starter relays or BCM (Body Control Module) failures can interrupt signals. Just yesterday saw a case where incorrect dashcam wiring caused battery drain. Daily usage tips: keep keys away from water, and avoid prolonged audio use after turning off the engine.
Last week, Uncle Zhang in our neighborhood couldn't start his car and asked for my help. It turned out he wasn't pressing the brake pedal. For push-button start vehicles, you must depress the brake pedal to activate the system - that's basic operation. Secondly, check if the dashboard displays a key icon, which indicates the key isn't being recognized; try replacing the battery. If you hear a clicking sound but the engine doesn't turn over, it's likely either a dead battery or a faulty starter motor. If there's no response at all, first check the main fuse, usually located in the engine compartment's fuse box. Once during repairs, I found a stuck fuel pump can also cause starting failure, though this is relatively rare.
