Description
⚙️ UD Zexel ECU Repair – Reliable Service for CWB536 and RG8 Trucks
At Autolectronix, we specialise in repairing Zexel engine control modules used on UD CWB536 and RG8 series trucks. These ECUs, often bearing part numbers such as 407915-5560, 407915-5320, or 407914-1280, control the FE6 diesel engine, managing injection, timing, and fuel delivery for optimal performance.
With age, vibration, and heat, these ECUs develop internal component faults that lead to non-start conditions, injector malfunctions, or loss of communication. Instead of replacing the module, Autolectronix offers a cost-effective repair restoring full OEM functionality.
🧠 Common Faults We Repair
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No Communication / No Start: ECU fails to link to diagnostic tools or power up.
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Injector Driver Failures: Loss of one or more injector outputs causing rough idle or misfires.
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Power Rail and Voltage Regulator Faults: Burned tracks or failed internal 5 V/12 V regulators.
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Corrosion / Moisture Ingress: Water damage on the PCB or at the connector pins.
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Overheating / Thermal Stress: Cracked solder joints and burnt components from engine-bay heat.
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Memory / Code Retention Errors: ECU stores false fault codes or loses calibration data.
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CAN Line Damage: Intermittent network drop-outs between ECU and transmission control.
Each repaired ECU undergoes a full bench-test simulation replicating engine inputs and injector loads.
🔍 Our Repair Process
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Comprehensive Diagnostics – Communication, power-rail, and signal testing.
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Component-Level Repair – Replacement of failed ICs, MOSFETs, capacitors, and connectors using automotive-grade parts.
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Full Bench Testing – Live testing of injector outputs, CAN bus communication, and sensor feedback.
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Calibration & Quality Assurance – All outputs checked to OEM specifications with thermal cycling.
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Warranty Coverage – 3-month standard warranty (extendable to 12 months on request).
🚛 Supported UD Truck Models
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UD CWB536 – FE6 Engine
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UD RG8 Series – FE6 Turbo Diesel
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UD MK/PK Series (early variants with Zexel control)
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Other regional UD trucks sharing the Zexel 407915 series ECU
🔧 Additional Software Services
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VIN Number Modification – R1 500
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Full Flash / Clone of ECU – R2 000
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Speed Limiter Adjustments / Removal – R2 000
(For off-road or authorized applications only. Vehicle owners must comply with local regulations.)
💪 Why Choose Autolectronix
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15 + years heavy-vehicle electronics experience
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Advanced bench simulation equipment for Zexel ECUs
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Cost-saving repairs versus replacement
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Rapid turnaround and OEM-level quality assurance
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Friendly technical support and warranty included
📧 sales@autolectronix.co.za ☎ +27 31 700 1420