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      01-11-2015, 12:14 AM   #1
davidmh47
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2011 35d Glow plug fail

So I took the X5 to the dealer today and they said that number 5 glow plug and the glow plug control module need to be replaced. Received fault codes of 4A7E, 4A79,4A74,49A5, AND 4A2E. Are the LIN Bus codes related to the controller failure or the plug fail? I'm not sure what the LIN bus is. The dealer wants $458 to replace the controller and $897 to replace the glow plugs My thought is to replace the glow plugs and see if the rough idle at start up goes away. Would the controller be bad if only one plug failed? Does anyone have a DIY for replacing the glow plugs?

Thanks.
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      01-12-2015, 09:54 AM   #2
smyles
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AFAIK it's pretty straightforward, but you have to remove the intake manifold first.

I'm not sure if replacing just one glow plug is wise given the above. Also, make sure you buy the correct ones, I think there are variations for cold climate (?) with different impedance (?).
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      01-12-2015, 11:48 AM   #3
joe_planet
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I cant really comment on the problem, as it hasn't happened to me. However it is possible for an injector and controller to fail so it wouldn't be out of the realm of possibility for this subsystem to follow the same trail.

Try to get a second opinion from and indy.
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      01-12-2015, 02:59 PM   #4
serge1
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2011 BMW X5 35d  [0.00]
I hear glow plugs and go "bad thermostat". This thread explores how bad thermostat affects glow plugs failure.

I have a 2011 35d. Better go to that stupid hidden menu and check coolant temperature
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