Choose the symptom or technical question that matches your enquiry. These 50 articles explain what to record, how to interpret the evidence and when specialist assessment is appropriate. They do not replace vehicle-specific repair instructions.
All diagnostic collections · Vehicle and module finder
Charging equipment and session problems
- EV Charging Never Starts at the Scheduled Time
- EV Charging Session Records Show Different Energy Totals
- EV Charging Cable Works Only When Held in Position
- EV Charging Limit Changes After Selecting Another Driver Profile
- EV Charging App Is Offline but the Car Charges Normally
- EV Charging Stops When Home Energy Demand Increases
- EV Charging Connector Is Unusually Hot After a Session
- EV Charging Works at One AC Rate but Fails at a Higher Rate
- EV Charge Port Opens but Its Status Light Stays Dark
- EV Charging Fault After an Extension Lead Was Used
Battery measurements and assessment records
- EV Battery State of Health Differs Between Two Reports
- EV Battery Cell Voltage Spread Needs Operating Context
- EV Battery Temperature Sensors Report Different Values
- EV Battery Percentage Falls While Parked Without Driving
- EV Battery Percentage Rises After the Car Rests
- EV Battery Warning Appears After Coolant Was Topped Up
- EV Battery Capacity Report After a Replacement Pack
- EV Battery Data Shows an Impossible Negative Reading
- EV Battery Balancing Is Not the Same as Repairing a Failed Cell
- Keeping diagnostic records for an EV battery warranty enquiry
Heating, ventilation and climate controls
- Cabin Blower Works Only at Maximum Speed
- Cabin Blower Keeps Running After the Vehicle Is Locked
- Climate Panel Is Dark but Demisting Still Works
- Airflow Comes from the Wrong Vents
- Climate System Clicks Repeatedly Behind the Dashboard
- Outside Temperature Display Is Wrong and Climate Control Behaves Oddly
- Air Conditioning Cools at Road Speed but Not at Idle
- Air Conditioning Stops Cooling After Twenty Minutes
- Cabin Recirculation Button Does Not Change Airflow Noise
- Heated Windscreen Has Clear and Unheated Strips
Lighting circuits and replacement lamps
- Indicators Flash Quickly After a Lamp Replacement
- Daytime Running Light Fails but the Main Headlamp Works
- Headlamp Levelling Warning After a Suspension Spring Change
- Automatic High Beam Stays Unavailable in Clear Conditions
- Brake Lamp Warning Appears Only with the Tailgate Open
- Fog Lamp Indicator Is On but Neither Lamp Illuminates
- Interior Reading Lamp Flickers When a Door Moves
- Replacement Headlamp Has Different Colour or Brightness
- Rear Lights Glow Faintly When Switched Off
- Hazard Lights Work but the Indicator Stalk Does Not
Instrument displays and vehicle information
- Instrument Cluster Goes Blank but the Engine Keeps Running
- Speedometer Reading Differs from a Phone App
- Fuel Range Display Falls Faster Than the Fuel Gauge
- Dashboard Illumination Changes When the Headlights Switch On
- Instrument Needles Sweep Repeatedly During Starting
- Odometer Display Flashes After a Module Replacement
- Head-Up Display Is Visible Only at One Seat Position
- Dashboard Warning Chime Sounds Without a Visible Message
- Trip Computer Resets but the Odometer Remains Correct
- Instrument Cluster Replacement and Recorded Vehicle Identity
Need help choosing the next step?
Describe your fault or explore the main repair library. Confirm scope and arrangements before booking or dispatch. Workshop assessments take place in Didcot; suitable removed-module enquiries are welcome from across the UK.