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DISCO3.CO.UK > Faults & Fixes (D4)

HCM causing problems and warnings?
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sceh
 


Member Since: 14 Sep 2011
Location: annecy
Posts: 233

France 2011 Discovery 4 3.0 TDV6 S Auto Chawton WhiteDiscovery 4
HCM causing problems and warnings?

In September I had both front headlights with blown bulbs. After trying to find and check fuses (there aren't any btw since they use MosFet) I changed the bulbs and though nothing of it since the lights worked. I never questioned why it happened and put it down to happenstance. Some time later I get all the dreaded warning lights as in this string.


https://www.disco3.co.uk/forum/suspect-ele...ult+lights

They say it is the HCM which cause all their problems. Where is the HCM and how do I test it please?
If it turns out to be this a large bottle of champagne will be mailed for sure!!  
Post #227489425th Jan 2022 10:58 am
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