What is the reason for the continuous flashing of the Nissan Sylphy's anti-theft light?

2 Answers
DanielLee
08/28/25 6:05am
Nissan Sylphy's anti-theft light keeps flashing because there is a malfunction in the car's engine electronic anti-theft system. Overview: The Sylphy is a mid-size car under Dongfeng Motor Co., Ltd., and is one of the most typical mainstream family sedans in the Chinese market (alongside models like the Skoda Octavia PRO, Volkswagen Sagitar, Lavida, Toyota Corolla, and Bora). Its fuel consumption ranges from 4.9 to 6.1L/100km, with a displacement of 1.6L. Others: It is equipped with a 1.6L naturally aspirated engine that meets the China VI emission standards, delivering a maximum power of 99kW (135 horsepower) and a peak torque of 159Nm. The transmission system is paired with a CVT gearbox. It also features the new Nissan-Connect super-smart connectivity system and an external 8-inch HD capacitive touchscreen.
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LaMary
09/10/25 4:25am
The flashing anti-theft light is a common issue, I've fixed many Sylphys with this problem. It usually indicates the vehicle's anti-theft system is activated. For example, if doors, trunk or hood aren't properly closed, sensors may detect intrusion risk and trigger the flashing; or it could be caused by a dead key fob battery preventing proper recognition. Try firmly closing all doors and windows first. If it persists, lock with remote then wait a few seconds before unlocking again. Another possibility is faulty anti-theft module or low battery voltage causing system errors. Best to visit a 4S shop or professional workshop for diagnostic equipment to check the anti-theft control unit ASAP - don't tamper yourself to avoid damaging other components. Normally, ensuring all doors are fully closed with audible locking sound when parking will prevent this.
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