Car: 2007 chrysler 300c Touring (UK Station wagon)
Join Date: Oct 2012
Member Number: 41160
Location: Scarborough, north yorks.
Thanked 11 Times in 10 Posts
Originally Posted by Simon@thecustom300cshop
The flickering lights could just be the alternator struggling to keep the voltage up whilst the heater is on. I think pulling fuses is worth a try. Does the code reader your waiting for do more than just engine codes and running functions?
Car: 2006 Chrysler 300C CRD Touring in Mineral Grey
Join Date: Aug 2006
Member Number: 7282
Location: Surrey, England
Thanked 35 Times in 34 Posts
Originally Posted by Pappajohn
not disagreeing with you, but my handbook says the diesel specific cabin heater fuses are under the cowl cover next to the brake fluid reservoir....3 x 50amp.
Apologies! You are absolutely correct. I was mislead by the page heading (Rear PDC) and the photos (which did not include cowl cover), although I should have been suspicious of such heavy fuses being so far removed from the component they were protecting.
The Following User Says Thank You to devilmaycare For This Useful Post:
thanks for the heads up and link but i doubt it's the switch.
the dash lights dont go out and on again....more like one second they get full voltage then next second they are getting 6 volts then back again next second and so on until the engine is warmed up and voltage increases again to 14+ volts which points me to the 'cold' engine electric heater elements pulling a very high current until the engine temp sensor tells them to turn off.
if i don't use the heater at all until the engine is up to normal temperature then everything works fine, 14 plus volts and no lights flickering, so i still suspect the heater, or more specifically, the electric cabin heater.
the cabin heater has 3 separate elements totalling 1000 watts (1kw), all controlled by 3 x 50amp fuses...if they all draw a max 50amps then thats around 80% of the alternators maximum output.
next job is remove the scuttle/cowl cover and pull the 3 fuses to see if that cures it.
if it does then the fuses will remain out.
never had a car with 'part time' electric heating so i wont miss it.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.