AV-SCANNER guides
IMMO and key guides
Spare and lost keys, fobs, immobilisers and alarms. Each guide is free to read here and to download as a branded PDF for the workshop.
Adding a Spare Key
Program an additional key while you still have a working one
Remote Fob Pairing
Pair the remote buttons of a key to its vehicle
Removing Lost Keys From Memory
Stop a lost or stolen key from starting your car
Smart Key Not Detected
Diagnose keyless entry and push-button start faults
Key Fob Battery and Shell Replacement
Replace battery and case without losing pairing
Key Won't Turn in the Ignition
Free a stuck ignition without causing damage
Replacing a Worn Metal Key Blade
Get a new blade cut and keep your transponder
Buying a Replacement Key Safely
Avoid fake fobs and used keys that cannot be paired
Keyless Entry Security Tips
Protect your car from keyless theft
Spare Key Planning
Why a spare now saves money later
Key Fob Range Problems
Find why a remote only works up close
Valet and Spare Key Modes
Use valet features and store spare keys safely
Replacement ECU Immobiliser Matching
Why a new ECU needs matching and who can do it
Replacement BCM Immobiliser Matching
What must be matched after a body module change
Immobiliser Warning Light Diagnosis
Trace a no-start caused by the immobiliser
How Transponder Systems Work
Understand the key, antenna ring and control modules
Immobiliser Faults After a Battery Change
Why a car refuses to start after losing power
No-Start Diagnosis: Immobiliser or Not
Separate security faults from fuel and spark faults
Steering Lock Faults
Understand electronic steering lock warnings
Alarm Going Off by Itself
Trace bonnet, door and sensor faults behind false alarms
Aftermarket Alarm and Immobiliser Problems
Diagnose no-starts caused by added security systems
All Keys Lost: Your Options
How owners legally recover a car when no key remains
Security PIN: How Authorised Access Works
What the PIN protects and how owners obtain it properly
Proof of Ownership Checklist
The documents dealers and locksmiths will ask for
Use them with the AV-SCANNER
Look up a fault code, run a local diagnosis and open the right guide from the reader's own menus.
