Does anyone have experience in getting CPO warranty for diesel engine glow plugs?I went through my CPO coverage brochure that i got from BMW Canada when i bought my 2009 X5 35D but could't find anything in it.They haven't mentioned glow plugs neither in included items nor in excluded items.

Just got error code for cylinder 3 glow plug after 90K Kms and would like to change them all.