Page 1 of 1
					
				PRE-HEATING
				Posted: Mon Nov 29, 2010 5:29 pm
				by blingsta
				What does it actually do pls guys?  i dont have the AUX HEATING  

  ive only got the AUX VENT,
ive noticed that when the weathers cold and i flick the ignition on and the dash says PRE-HEATING ? is this warming up the glow plugs for a easier start? 
should i wait for the message to disappear before cranking?
 
			
					
				Re: PRE-HEATING
				Posted: Mon Nov 29, 2010 6:42 pm
				by pvr
				Yes, those are the glow plugs getting their current to pre-heat them. Wait until the message goes off again, then start. Otherwise starting will be more difficult.
			 
			
					
				Re: PRE-HEATING
				Posted: Mon Nov 29, 2010 11:09 pm
				by petert
				Not sure about the E53 diesel but on the E70 the engine start sequence doesn't go through until the glow plug symbol in the dash goes off.
Peter T
			 
			
					
				Re: PRE-HEATING
				Posted: Tue Nov 30, 2010 3:17 am
				by Turks
				You dont have to wait for anything in the E53. You should though! 
If the Pre-Heating message is displayed then you should wait for it to go out otherwise the diesel will be too viscous and will struggle to start. 
Turks.
			 
			
					
				Re: PRE-HEATING
				Posted: Tue Nov 30, 2010 10:27 am
				by Sanj
				Not my quote but 12 seconds is what I've heard - I always wait though.
Peace of mind and all that. The aux heater being used in advance of startup will also help.
			 
			
					
				Re: PRE-HEATING
				Posted: Tue Nov 30, 2010 9:53 pm
				by blingsta
				cheers guys, unfortunately i dont have the aux heating option so that ideas out of the window, but i have noticed that on the 1 occasion when i didnt wait for the pre heating message to clear and i tried to start her, she seemed to struggle (or should i say just cranked over a tiny bit longer),  i suppose theres no harm in waiting a few xtra secs for the message to clear