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Land Rover Repair/99 Disco I, tail light/dash light problem


I have a 1999 Discovery I that has tail/dash light issues, but only when it is cold.  In the winter months, when we start the car, the tail lights and dash light do not turn on until the car has warmed-up.  We have changed the fuses to no avail. Summer time- no issues whatsoever.  At what point are the tail lights tied to the temperature of the vehicle?  Any support will be greatly appreciated.

In that car the tail and dash lights are wired directly from the headlight switch.There is no complex computer control.  It's possible the switch is not making good contact because it's old.  Try wiggling.  Outside of the switch you just have the fuse box and wiring connectors, any of which can get flaky in an older vehicle.

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John Elder Robison


I own J E Robison Service in Springfield, MA. We are Bosch Car Service for Land Rover, BMW, Mercedes, and other European lines. I can answer most questions about Land Rover service or repair. I'm known as a car enthusiast, machine aficianado, photographer, writer, and speaker. I've been around Land Rovers and British cars most of my life. Visit me at my car business, or my author website, Check out my autism and writing blog at or my photos on John Elder Robison


I have been a Land Rover service manager since Land Rover returned to North America in 1987. My company is a four-star Bosch Car Service facility, known nationwide for Land Rover service, overhaul, customization, and restoration. In addition to Land Rover our company services BMW, Jaguar, Mercedes-Benz, Rolls_Royce, and Bentley motorcars. We have factory-plus-level service capability for all makes. Visit my company online at > service > land rover Also visit my blog at


In the Land Rover world, my writing can be found in various print magazines and online at robisonservice.blogspot,com. In the wider publishing world, my work is published by 20 publishers in over 50 countries. Mt books Look Me in the Eye, Be Different and Raising Cubby have made US and international bestseller lists.

I am ASE certified, Bosch Trained, and trained by Omnitec/T4 and Autologic on their Land Rover test systems.

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