Most vehicles manufactured in the last several decades use transponder-based immobilizer systems. These keys contain embedded electronic chips that communicate with the vehicle’s engine control module. Without proper electronic authorization, the vehicle will not start.

Guardian Safe & Lock programs and replaces transponder keys according to manufacturer specifications. This process involves securely accessing the vehicle’s immobilizer system, verifying authorization, and registering new keys so the vehicle recognizes them as valid credentials.

We can:

• Add spare transponder keys

• Replace lost or damaged keys

• Remove lost or stolen keys from the vehicle’s memory

• Restore operation after immobilizer-related failures

Programming is performed on-site in most cases, eliminating the need for towing or dealership scheduling delays.

Many vehicles use high-security keys with precision sidewinder or laser-cut profiles. These keys provide improved resistance to duplication and tampering compared to traditional edge-cut keys.

We cut and program high-security keys using specialized equipment designed to produce exact manufacturer-specification cuts. This ensures proper operation in door locks, ignitions, and trunk cylinders without premature wear or operational issues.

High-security key services include:

• Precision duplication of existing keys

• Replacement keys created from vehicle key codes

• Integration with immobilizer programming systems

• Restoration of full key functionality after loss or damage

Proper cutting accuracy is critical to prevent internal lock damage and ensure smooth, reliable operation.

Modern vehicles increasingly rely on remote transmitters and proximity-based keyless entry systems. These devices enable remote locking, unlocking, trunk access, and push-button ignition.

Guardian Safe & Lock provides full support for remote transmitters and proximity keys, including:

• Replacement of lost or malfunctioning fobs

• Programming new proximity keys to the vehicle

• Battery replacement and transmitter restoration

• Diagnosis of communication or recognition issues

We ensure that replacement devices are properly integrated into the vehicle’s security system and that lost or stolen devices can be removed from authorization when necessary.

Ignition cylinders and door lock cylinders experience wear over time due to repeated use, contamination, or mechanical damage. Symptoms may include keys that stick, fail to turn smoothly, or no longer operate reliably.

Guardian Safe & Lock diagnoses and repairs these issues at their source.

Depending on the condition, service may involve:

• Cleaning and restoring internal components

• Repairing worn mechanical parts

• Reconfiguring cylinders to restore reliable function

• Replacing damaged or failed cylinders

Whenever possible, repairs are performed in a manner that preserves compatibility with existing keys to minimize disruption.

Rekeying restores exclusive control over vehicle locks by altering the internal configuration of lock cylinders so previous keys no longer function. This service is recommended when keys are lost, stolen, or when ownership changes.

Rekeying provides several important benefits:

• Prevents lost or stolen keys from being used

• Restores full key control without replacing all hardware

• Improves overall vehicle security

• Maintains compatibility between ignition and door locks

This process can be combined with new key programming to ensure both mechanical and electronic security are fully restored.

Automotive locksmith services are provided through fully equipped mobile service units capable of performing most services at your location. This eliminates the inconvenience and expense of towing your vehicle to a dealership or repair facility.

Mobile services include:

• Emergency lockout assistance

• On-site key replacement and programming

• Ignition and lock repair

• Full lost-key recovery

Our mobile technicians carry the equipment necessary to diagnose, cut, and program keys while maintaining strict adherence to vehicle security requirements.

Maintaining reliable access to your vehicle is easier with a few preventive measures:

• Keep at least one spare key available

• Replace worn or damaged keys before failure occurs

• Address ignition or lock issues early

• Replace weak transmitter batteries promptly

• Seek professional service when keys or locks begin to malfunction

Preventive service helps avoid unexpected lockouts and ensures continued reliable operation.

Looking for more security options? You can also call, text, or email us about other options, including:

• Commercial Locksmith Services (Including commercial lock installation, commercial key duplication, master key systems, panic bars, door closers, & restricted keyways)
• Residential locksmith services
• Intercom Systems (Audio & Video)
• Access Control system installation (including automatic door openers, card access & mobile credentials, commercial buzz-in systems, commercial keypad locks, electric strikes, magnetic locks, and other forms of electronic door hardware.
• Surveillance Cameras (Including Eagle Eye Networks, Alibi, and Hikvision systems)
• Audio & Video Intercom Systems (Audio & Video)
• Emergency locksmith services
• Car locksmith services (Including key programming)
• Houston Safes & Houston Gun Safes (including sales & services)