⚡ EV Load Management ECU Diagnostics & Repair in London

Mobile Diagnostics for Power Distribution, Charging Control & HV Load Balancing

The Load Management ECU (also known as the Power Distribution ECU, PDU Controller, or Load Control Module) is responsible for managing how electrical power is distributed across the EV. It controls charging loads, HV accessories, thermal systems, and safety‑critical power allocation.

When the Load Management ECU develops a fault, the EV may refuse to charge, shut down HV systems, or enter reduced‑power mode.

FixAnyEV provides advanced Load Management ECU diagnostics and repairs anywhere in London.

📞 Call 07779 836 677 for Load Management ECU diagnostics.

⚠️ Load Management ECU faults can disable charging or HV activation. ⚠️ Never attempt to bypass or reset this ECU without EV‑specific tools.

🔧 What the Load Management ECU Controls

✔ High‑Voltage Power Distribution

• Battery → Inverter
• Battery → OBC (On‑Board Charger)
• Battery → DC‑DC converter
• Battery → Thermal management system
• Battery → HV heater

✔ Charging Load Management

• AC charging control
• DC rapid charging handshake
• Charge port lock control
• Charging current regulation
• Overcurrent protection

⚠️ Load ECU faults often cause charging refusal or instant charging shutdown.

✔ Thermal Load Balancing

• HV heater activation
• Cooling pump power allocation
• Chiller and compressor load control
• Battery heating/cooling priority

✔ Safety & Protection Logic

• Overcurrent protection
• Overvoltage protection
• HV isolation monitoring (in some EVs)
• Emergency shutdown logic

📞 Call 07779 836 677 for HV load system diagnostics.

🚗 Symptoms of Load Management ECU Faults

• EV won’t charge
• Charging stops immediately
• “Charging System Fault”
• “Electrical System Fault”
• “Power Distribution Fault”
• No‑Ready state
• Reduced‑power mode
• HV heater not working
• Cooling pumps not activating
• DC rapid charging disabled

⚠️ Many of these symptoms mimic BMS or inverter faults — correct diagnosis is essential.

🧠 Why Load Management ECU Faults Happen

• Water ingress
• Corrosion in HV connectors
• Overcurrent events
• Failed relays or MOSFETs
• Software corruption
• Incorrect coding after module replacement
• HV isolation issues
• Charging system faults

🛠️ Our Diagnostic Process

1. Full EV‑specific scan – Load ECU, BMS, OBC, HVJB, VCU
2. Live load monitoring – charging current, HV accessory loads
3. Relay/MOSFET activation tests
4. Charging handshake analysis
5. Thermal load behaviour testing
6. CAN communication checks
7. On‑site repair or safe workaround

⚠️ Load Management ECUs are security‑protected — specialist access required.

🔒 Security Access & Coding

Many EVs require secure access to:

• Reset the Load Management ECU
• Re‑code after replacement
• Pair with BMS or OBC
• Clear HV lockout
• Restore charging permissions

FixAnyEV uses EV‑specific tools to safely access and code this ECU.

📞 Call 07779 836 677 for secure ECU access.

🔧 Load Management ECU Repairs We Provide

• ECU testing & diagnosis
• Connector cleaning & repair
• Water ingress repair
• HV fuse replacement
• ECU coding & pairing
• Charging system restoration
• Thermal load control repair
• HV accessory power restoration

🌍 Areas We Cover in London

All London boroughs, including:

• Croydon, Bromley, Lewisham
• Camden, Islington, Hackney
• Ealing, Brent, Hillingdon
• Kingston, Richmond, Sutton
• Central, North, South, East and West London

📞 Book your Load Management ECU repair: 07779 836 677

⭐ Why EV Owners Choose FixAnyEV

• High‑voltage certified technician
• EV‑specific Load ECU diagnostics
• Mobile service across London
• Faster and more accurate than dealerships
• Trusted by EV owners, fleets and traders

📞 Book Your Load Management ECU Diagnostics

FixAnyEV brings expert EV power distribution diagnostics directly to your home or workplace.

📞 Call 07779 836 677 to book your EV Load Management ECU repair.