This LRO reader emailed LRO.firstname.lastname@example.org to ask for help with central locking and fan issues with his Range Rover P38.
I’m having issues with the central locking on my 1996 P38 DSE. The rear doors and the tailgate lock but neither of the front doors do. The fan is constantly on as well, but I can’t adjust its speed.
David Pigg, Watchfield, Oxon
The constant fan sounds like an issue with the HEVAC controller in the centre console. If the auto function and demist function are switched off and the rotary control for the fan speed isn’t affecting the system, I would suspect the unit. If the auto and the demister are on and can’t be switched off again, I would again suspect the unit. The easiest way to check it is by substitution. They cost from £35 upwards – ensure a refund is offered if the replacement unit is faulty.
The central locking issue is most likely down to dirty or corroded contacts in the door actuator’s multi plugs, or even defective actuators. Start by cleaning the multiplugs in each front door with contact cleaner. If there’s still no improvement, test each front actuator for continuity with a multimeter, or remove them from the front door and plug them into the wiring for the rear door actuators to see if they operate there. That way you’ll be able to dismiss the easiest parts to replace, and then move on to getting a good independent dealer with TestBook diagnostics to diagnose the fault. Expect to pay upwards of £60 for a plug-in.
This workshop advice appeared in the Feb 2015 issue of LRO. Back issues are available to download on digital devices here.