Why won't the 2017 Lavida start with one-button ignition?

[MacChristopher]

Volkswagen Lavida's one-button start failure may be caused by a depleted smart key battery. When the vehicle's smart key runs out of power, the key's transmission power becomes very low, making it difficult for the onboard sensor to detect it, rendering the one-button start function unusable. Here are additional details: 1. Powertrain: The 1.6L naturally aspirated engine paired with a 6-speed automatic transmission delivers maximum power of 81kW and peak torque of 155N·m, achieving 0-100km/h in 12.3 seconds. It performs adequately for daily steady driving. Overtaking isn't particularly strenuous when accelerating aggressively. 2. Chassis: The suspension features front MacPherson struts and rear torsion beam setup, tuned with subtle German characteristics - delivering crisp vibration filtration, solid support, and precise handling with minimal body roll during cornering, offering a stable and substantial driving feel. 3. Space: With a 2610mm wheelbase, the Lavida offers rear legroom of one fist plus four fingers and headroom of two fingers. The 478-liter trunk provides ample capacity for both cargo and passengers, making it exceptionally well-suited for family use.