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Old 03-27-2014, 06:40 PM
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TriX5 TriX5 is offline
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Glow plug bad --> change control unit?

Hi guys,

My 35d is at the dealer, the CEL was on and I suspected the DEF was at fault again. I filled the active tank but that didn't help. They diagnosed the metering valve is faulty. It is being replaced under parts warranty.

They checked the fault codes and claim it has a bad glow plug #6 as well. Not impossible at this mileage. But SA caims he needs to change the glow plug control unit and the total is $1200. A glow plug is 40 bucks and the unit is 150-200 or so, so I struggle to understand why the total is 1200? Does it really take them a whole day to change one GP and the unit?

Of course I also "need new tires", I always do it seems. I have yet to come back from a visit to the dealer and not need brakes or tires....

HERE IS MY QUESTION, did anyone DIY their glow plugs? Did you change the preheat control unit?
__________________
2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.

Last edited by TriX5; 03-27-2014 at 07:38 PM.
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