my BMW X5 F15 (2014-2019) has a burning smell, what could it be

Solution

1. Preparation

• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Gather tools: socket set, OBD-II scanner, multimeter, and safety gloves.

2. Address Engine Oil Leaks

• Sub-steps:
  1. Locate any visible oil leaks; use a degreaser to clean the area for better visibility.
  2. Replace any damaged gaskets or seals.
  3. Refill engine oil if necessary, ensuring it meets manufacturer specifications.

3. Address Cooling System Issues

• Sub-steps:
  1. Check the coolant reservoir for proper levels; if low, top up with the specified coolant type.
  2. Inspect hoses for cracks or leaks; replace any damaged hoses.
  3. If overheating persists, consider replacing the thermostat or water pump.

4. Inspect and Repair Brake Components

• Sub-steps:
  1. Remove the wheel to access the brake assembly.
  2. Inspect brake pads for wear; replace if they are worn down or have an unusual smell.
  3. Check rotors for warping or overheating signs; resurface or replace as needed.

5. Check Electrical Components

• Sub-steps:
  1. Inspect wiring harnesses for signs of melting or damage.
  2. Repair or replace any damaged wires or connectors.
  3. Test electrical components with a multimeter to ensure proper functionality.