Immobiliser, ECU & Electronic Module Repairs

Expert Coding & Repair for ECU, BCM, ELV/ESL, CAS, FEM & Clusters.

Modern vehicles rely on complex networks of computers. When these fail, the car won’t start, or the steering remains locked. At Precision Auto Locksmith, we go beyond simple key cutting. We specialize in advanced automotive electronics, offering component-level repairs and coding for ECUs, immobilisers, and body control modules. Don’t pay thousands for a new module at the dealership—we can often repair or clone your existing one.

Common in Mercedes-Benz (W204, W207, W212), BMW, and VW.

  • Symptoms: Key inserts but won’t turn, dashboard lights won’t come on, steering wheel remains locked.

  • Our Solution: We repair or replace the faulty Electronic Steering Lock (ESL/ELV) emulator on-site, saving you the cost of replacing the entire steering column.

We are specialists in BMW immobiliser systems.

  • CAS Repair: Repairing corrupted CAS1, CAS2, CAS3, and CAS4 modules (Car Access System).

  • FEM/BDC: Coding and programming for newer F-Series BMWs (Front Electronic Module).

  • Sync Issues: Re-syncing CAS to DME/DDE (Engine ECU) when the car cranks but won’t start.

Engine & Body Control Module Cloning

  • ECU Cloning: If your Engine Control Unit is water-damaged or burnt, we can clone its data to a donor unit, making it “plug and play.”

  • BCM Repair: Fixing Body Control Module issues (wipers, lights, windows, or locks failing).

Dashboard, LCD Screen & Gauge Restoration

  • Fixing pixelated screens, stuck gauges, or total power loss in your dashboard instrument cluster.

  • Mileage correction (for legal replacement clusters only).

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Passionate – Dedicated – Professional

Why Trust Us with Your Electronics?

Dealer-Level Tools:

We use advanced programmers (Autel, VVDI, etc.) capable of reading EEPROM and MCU data safely.

Cost-Effective:

Dealers usually replace the whole unit. We fix or code the specific problem, saving you up to 70%.

Mobile Service:

For many of these issues, the car cannot be moved. We come to you in Rolleston, Ashburton, and Christchurch.

Passionate – Dedicated – Professional

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Passionate – Dedicated – Professional

Warning Lights or Non-Start? Complex electronic faults need an expert, not just a locksmith.

Call our technician at 022-588-6855 to discuss your module repair.