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How to start the car when the Sylphy key battery is dead?

2 Answers

Yvette

07/24/25 9:04am

Sylphy key battery dead starting methods: 1. If the car is not equipped with a one-touch start intelligent control system, simply use the mechanical key to start; 2. If equipped with a one-touch start intelligent control system, shift the gear lever to P position, firmly press the foot brake, touch the ignition switch with the smart key, and within 10 seconds of the buzzer sounding, press the brake pedal and push the ignition switch. The Sylphy's dimensions are 4641mm in length, 1815mm in width, and 1447mm in height, with a wheelbase of 2712mm. The car's safety features include an engine immobilizer system, hill start assist system, vehicle dynamic control system, tire pressure monitoring system, electronic brake force distribution system, anti-lock braking system, and emergency brake warning system.

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Sylvia

08/11/25 4:28am

I just had a dead key fob issue with my Nissan Sylphy—the car wouldn’t start in the parking lot. Quickly pulled out the hidden metal key inside the fob, manually opened the door, and got in. Sat down, pressed the brake pedal firmly, then held the entire fob against the start button near the steering wheel. Waited until the indicator light lit up, pressed the button, and the engine roared to life. This trick works like a charm—just stay calm. Even with low battery, the system can still detect the chip signal, so no panic. Later, I made it a habit to check the fob’s battery during car washes. Swapping in a CR2032 battery costs just a couple of bucks. Don’t overlook this detail—imagine the hassle if the fob dies during a midnight outing. Pro tip: Replace the battery every six months and keep emergency tools handy in the car.

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