left side passgenger parking light was on and killed my battery, any help
Thread Starter
Newbie
Joined: Sep 2017
Posts: 1
Likes: 0
c300 4matic 2009
left side passgenger parking light was on and killed my battery, any help
my passenger side parking light was on and killed my battery any advise. I think I recall this happening to me 4 years ago then my dealer said the battery was good and after a month my battery died, ended up changing my battery.
now after 4 years I noticed that the right side parking light was on and my batter drained out.. I got a boost and turn my switch to auto instead of 0 car is running fine but not sure why would the parking light come on,, maybe I did it mistakenly
by turning the switch to P not sure. doesn't sound like
now after 4 years I noticed that the right side parking light was on and my batter drained out.. I got a boost and turn my switch to auto instead of 0 car is running fine but not sure why would the parking light come on,, maybe I did it mistakenly
by turning the switch to P not sure. doesn't sound like
Last edited by sheldonrego; Sep 14, 2017 at 05:17 PM.
Super Member
Joined: Oct 2014
Posts: 701
Likes: 103
From: Ontario, Canada
2009 C63 AMG, 2010 C250 4Matic Sport
You might've bumped the switch to turn on the passenger side parking lights.. I remember when I first got the car I did that by accident, and spent a good 20 min trying to figure out the "cause of the grounding issue that's keeping the one side of parking lights on" 
Were both the front and back lights on, on the passenger side? I know these cars had a recall for grounding issues with the tail light bulb carrier, if you haven't had those replaced by now you might want to look into that as well. Usually though, that issue just causes burnt out bulbs and occasionally a burned ground wire on the connector
Were both the front and back lights on, on the passenger side? I know these cars had a recall for grounding issues with the tail light bulb carrier, if you haven't had those replaced by now you might want to look into that as well. Usually though, that issue just causes burnt out bulbs and occasionally a burned ground wire on the connector
Super Member
Joined: Jun 2017
Posts: 608
Likes: 107
From: Western NC
2009 MB C300 Sport 4matic
my passenger side parking light was on and killed my battery any advise. I think I recall this happening to me 4 years ago then my dealer said the battery was good and after a month my battery died, ended up changing my battery.
now after 4 years I noticed that the right side parking light was on and my batter drained out.. I got a boost and turn my switch to auto instead of 0 car is running fine but not sure why would the parking light come on,, maybe I did it mistakenly
by turning the switch to P not sure. doesn't sound like
now after 4 years I noticed that the right side parking light was on and my batter drained out.. I got a boost and turn my switch to auto instead of 0 car is running fine but not sure why would the parking light come on,, maybe I did it mistakenly
by turning the switch to P not sure. doesn't sound like
Senior Member
Joined: Feb 2015
Posts: 435
Likes: 81
From: New Zealand
W204 C200, BMW E30 M3, 1980Gt Mini, Toyota Corona, KTM 200 EXC.
Hi,
Leave the switch in auto instead of off, in off with an old switch there is enough tiny debris inside the switch to turn on a front park light on or make it intermittently flicker. Leaving in Auto avoids having to replace the switch.
Buy a battery charger if you don’t have one Ctek is the brand to go for and charge the battery.
If you have electric sunroof I would advise replace the battery if it is more than 1-2 years old, the reason is with a failing battery it affects the memory of the sunroof module and the roof starts stuttering when closing due it has lost its memory of where the stop point is and only the dealers can reset it.
Leave the switch in auto instead of off, in off with an old switch there is enough tiny debris inside the switch to turn on a front park light on or make it intermittently flicker. Leaving in Auto avoids having to replace the switch.
Buy a battery charger if you don’t have one Ctek is the brand to go for and charge the battery.
If you have electric sunroof I would advise replace the battery if it is more than 1-2 years old, the reason is with a failing battery it affects the memory of the sunroof module and the roof starts stuttering when closing due it has lost its memory of where the stop point is and only the dealers can reset it.
