top of page

The car won't start and a padlock icon appears.

Why does the padlock light appear?

The safety system detects a fault and blocks the vehicle's ignition.

Most common causes

  • Key with damaged or unprogrammed chip

  • Low battery in vehicle or remote control

  • Ignition sensor failure

  • Electrical problem or fuses

What to do if your car won't start

a) Try another key

If you have a copy, check if the system recognizes a different key.

b) Check the battery

A low battery can prevent the system from functioning properly.

c) Try restarting the system

Lock the vehicle, wait a few minutes, and try starting it again.


Frequently Asked Questions


Can I start the car if the lock light is on?

No. The system blocks the ignition until it recognizes the key correctly.

Does this mean the car is damaged?

Not necessarily. It's usually a problem with the key or the security system.

Automotive locksmith service in San Juan


If your vehicle won't start due to a security system failure, we can help you on-site.


Programming of chip keys
Immobilizer diagnosis
Fast 24/7 service

Call us now: (787) 664-5557

bottom of page