Patrol hard start lights flicker

Your symptoms suggest a potential issue with the vehicle's charging system. I encountered a similar problem with my previous vehicle, a 2012 BMW 3 Series. The battery exhibited similar characteristics, including difficulty starting and fluctuating light intensity. Have you performed any diagnostic tests to assess the battery voltage and charging current? Are there any fault codes recorded within the vehicle's electronic control unit?

Thanks for the tip! I haven't run any proper diagnostics yet, just the basic visual checks. How did you figure out what was wrong with your BMW? Did you have to go through a bunch of tests, or was it pretty obvious once you hooked it up to a reader?

In my case, the diagnostic scan revealed a fault code associated with the battery voltage sensor. Further investigation confirmed that the sensor was providing erroneous data, thereby impacting the vehicle's charging strategy. Given your described symptoms, it would be prudent to initiate a thorough vehicle diagnostic procedure to ascertain the presence of any stored fault codes and evaluate the functionality of the battery sensor and associated circuitry. I ended up going to the workshop.

You were spot on! The Patrol went to a workshop, and the diagnostics pointed to a faulty battery sensor. They replaced it, and now it starts like a charm, and the lights are steady. Cost me 315€.