Land Rover Auxiliary 12v 14Ah

Description

The Land Rover Auxiliary 12V 14Ah battery is a smaller secondary battery used in certain Land Rover vehicles to support specific electrical systems independently of the main starter battery. Here’s a detailed description and application overview:

🔋 Battery Description:

• Voltage: 12 Volts
• Capacity: 14 Ampere-hours (Ah)
• Type: Typically AGM (Absorbent Glass Mat) or VRLA (Valve Regulated Lead Acid), designed for deep-cycle and standby use
• Dimensions: Compact size.
• Location in Vehicle: Often mounted under the passenger seat, rear luggage area, or engine bay depending on the model

⚙️ Function and Application:

This auxiliary battery is mainly used in Land Rover and Range Rover models equipped with stop-start systems, electronic parking brakes, and other high-demand electronic systems. Here’s what it supports:

1. Stop/Start System:
   Powers electrical systems when the engine is off during stop/start operation, preventing main battery drain.
2. Electronic Parking Brake (EPB):
   Ensures sufficient power is available for engaging or disengaging the parking brake.
3. Infotainment and Convenience Systems:
   Supports screens, control modules, and sensors while the main battery is dedicated to starting and other primary functions.
4. Safety Systems:
   Helps ensure continuous operation of features like emergency call systems, stability control, etc.

✅ Common Models Using the Auxiliary 12V 14Ah Battery:

• Range Rover Sport (L494)
• Range Rover (L405)
• Land Rover Discovery 4 / LR4
• Land Rover Discovery 5
• Range Rover Velar
• Some versions of the Range Rover Evoque

⚠️ Note: The presence of this battery depends on trim level, model year, and whether the vehicle has a stop/start system.

🔧 Maintenance Notes:

• If the auxiliary battery fails, you might experience:
  • Stop/start not working
  • Warning messages on the dash
  • Electronic parking brake malfunction
• Replacing it requires care to maintain vehicle programming. In some models, the system may need resetting or coding after replacement.

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