Glow plugs 101 ***Ver. 2.0***

[Sinatorj]

What does it mean if I never see glow plug light on startup?

 

[vdickie]

JUST The thread I needed! Thank you so much!!

 

[vdickie]

What does it mean if I never see glow plug light on startup?

need more context, does it illuminate and remain on or does it shut off once the car is warmed?

 

[Sinatorj]

Haven’t seen glow plug lite, Cept for fault of MAF sensor. Beetle is garage kept and hasn’t been cold.

 

[vdickie]

Haven’t seen glow plug lite, Cept for fault of MAF sensor. Beetle is garage kept and hasn’t been cold.

the car will automatically run a system check when the car is turned on initially. if the temperatures aren't cold enough to need plugs then the plugs won't come on at all, they're only used for initial starting until your engine is warm enough to create combustion heat on its own