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99 E300DT
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58 Posts
Discussion Starter #1
I just replaced my first glo plug on wifes 1999 E-300 with close to 300,000km. I need now to clear the CElight. Do I just unhook the battery or will it go away after 4 or 5 starts? Thanks in advance to all that respond. Cheers
 

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2010 E350 4matic
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325 Posts
I just replaced my first glo plug on wifes 1999 E-300 with close to 300,000km. I need now to clear the CElight. Do I just unhook the battery or will it go away after 4 or 5 starts? Thanks in advance to all that respond. Cheers
Hey Bud,
if you unhook the battery the CEL will disappear right after to hook it back. You wont have to go through 4-5 starts. If you do plan to unhook the battery you'll have to wait about 5 mins before hooking it back.

Cheers

BTW where in Ontario are you? :)
 

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99 E300DT
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58 Posts
Discussion Starter #3
Half way between London and Chatham. The Rodney exit on the 401. Just curious, why do I need to wait before re-connecting? CHEERS
 

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1959 220S cabriolet, 1983 240D original owner, 1999 E300 turbo diesel, 1988 560SL, 2003 SLK320
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3,513 Posts
I'm pretty sure that when I had a glow plug check engine light that it went out upon my first start after replacing the plugs.
 
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