BMW CAS4 Remanufactured Exchange Service | Original CAS4 Required | Plug & Play Replacement

At Lacorte Automotive, we provide a professional mail-in CAS4 remanufactured exchange service for BMW vehicles equipped with CAS4 immobilizer systems. This service is designed for customers experiencing no-start conditions, key detection issues, or CAS communication faults and looking for a reliable replacement without dealership-level programming costs.

You send us your original CAS4 module, and we provide a professionally remanufactured replacement programmed using the data from your original unit for simplified installation.

How the Service Works

1. Purchase this service
2. Ship your original CAS4 module to us
3. We transfer the required immobilizer and vehicle data
4. Your remanufactured CAS4 replacement is prepared and bench tested
5. We ship the replacement module back ready for installation

What You Receive

• Professionally remanufactured CAS4 module
• Data transferred from your original unit
• Bench tested replacement unit
• Simplified plug-and-play installation for supported applications
• Secure handling of immobilizer and vehicle data

Common CAS4 Failure Symptoms

• Vehicle will not crank or start
• Key not detected
• Ignition not responding
• CAS communication faults
• Water damaged CAS module
• Intermittent electrical or starting issues

Important Information

• Your original CAS4 module must be sent in for this service
• Include your VIN and contact information inside the package
• Previously opened or physically damaged modules may require additional inspection
• Turnaround times may vary depending on inventory availability

Supported Vehicles

Compatible with many late E-Series and F-Series BMW vehicles equipped with CAS4 systems.

If you are unsure about compatibility, contact us before purchasing with your VIN and CAS4 part number.