Discovery 3 & Range Rover - HDC Fault System Not Available

Question

The video shifts focus from replacing a gas cap to changing the battery in a Land Rover LR3. Land Rovers are sensitive to voltage; signs of a failing battery include immediate fan clutch engagement.

Video summary

• The video discusses replacing a gas cap and the Evaporative Emissions Fuel System, but the main focus shifts to a battery change in a Land Rover LR3.
• Land Rovers have a sensitive relationship with batteries and are particular about voltage. Incorrect voltage can cause various errors, such as parking brake communication errors, HDC (Hill Descent Control) fault system not available, and suspension problems.
• One sign of a battery nearing the end of its life is the electric fan clutch engaging immediately when starting the truck, even when the truck is not hot, causing the fan to spin at high speed and make noise.
• To replace the battery:
  1. There is a strap across the top held by 8mm screws.
  2. The battery clamps are 13mm.
  3. When removing the bad battery, start with the ground first to avoid issues.
  4. When installing the new battery, start with the positive terminal and end with the ground.
• The battery change process is straightforward and does not require detailed demonstration.

Video