What could be the reason for no response when pressing the start button in an old Teana?
3 Answers
The reason for no response when pressing the start button in an old Teana may be a fault in the engine ignition circuit. Teana powertrain: The 2021 Teana is equipped with a 2.0L turbocharged 4-cylinder KR20 engine, paired with an 8-speed continuously variable transmission. Teana body dimensions: The 2021 Teana measures 4901mm in length, 1850mm in width, and 1447mm in height, with a wheelbase of 2825mm. Teana chassis: The 2021 Teana features front-wheel drive, with a MacPherson strut front suspension and a multi-link trapezoidal control arm independent rear suspension.
My old Teana has been running for over a decade, and I've experienced the start button not responding several times. The main cause could be a dead battery, as older car batteries lose capacity quickly and are more prone to draining in cold weather or after long periods of inactivity. Check for corrosion on the battery terminals; green rust can block the current. Cleaning them with sandpaper can help. Another possibility is a weak key fob battery, which can cause the anti-theft system to lock and prevent the start button from working—try replacing the coin cell. The start button itself might be stuck or have an electrical issue; look for blown fuses labeled 'IGN' or 'ST' in the fuse box and replace them. In an emergency, try using the mechanical key in the backup slot—if it starts, the issue might be elsewhere in the system. If not, a professional diagnosis of the relay or wiring harness may be needed. For older cars, starting them regularly for about ten minutes helps maintain battery health, and parking in dry areas can slow corrosion.
I've driven the previous-gen Teana, and a common issue with no response when pressing the start button is battery problems. Insufficient charge or aging can cause the starting system to fail. Low power in the key fob may also trigger the vehicle's anti-theft function, affecting signal reception. Quick check: First, see if there are any dashboard lights—if completely dark, it's 90% likely a dead battery. Test by turning on the headlights; if they're dim, the battery is nearly depleted. The fuse box is located in the engine bay or driver's side—check relevant fuses, such as the one for the starter relay, to see if they're blown. Don’t forget to inspect wiring connectors for looseness or oxidation. If you're handy, you can measure voltage yourself or use a multimeter to test circuit continuity. But if inexperienced, avoid tampering and head straight to a repair shop or dealership for parts replacement. For older cars, timely replacement of consumables is key—get an annual battery test to prevent sudden failures.
