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RANGE ROVER BODY HVAC DISPLAY ECU FAILURES


We now have a low cost rebuild service for this ECU

Symptoms

Symptoms are usually obvious! - full or partial loss of display and no response/incorrect response to fan speed dial.

Blowing hot air on very hot days is software fault in early versions of this ECU. I suspect that the software engineer did not 'cap' the temperature tables so above about 45C the software wraps around to lowest temperature in the table but email if you know better. Not much fun in Arizona. Fault can be alleviated by keeping vehicle internal temperature below threshold when parked - park in shade or cover sun exposed windows with alloy foil.

Diagnostic Checklist

1. Check ECU internal light bulbs have not failed especially if the display is completely blank. The light bulb for the display is a special only available from main dealers (but not expensive - 58pence! but watch out for main dealers 4 HOUR LABOUR CHARGE TO CHANGE THIS BULB!). A guide to changing this bulb can be found at http://www.rangie.com/rrkb/nf_articles/99.htm (thanks to Andy Cunningham for this info)

We have a low cost rebuild service for these ECUs. If you would like a quote please complete the quote request form you can find from this page. Skip questions relating to engine management systems.

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