TDI 1Z Glow Plug Fuse Troubleshooting

Good day, esteemed forum members.

My current problem: a facelifted Passat 35i TDI 1Z, first registered in 1995, and imported from another country.
Die Glühkerzen werden nicht bestromt- schlechtes Startverhalten ist die Folge. Suffers.
Did the vehicle not blow the 50A fuse as expected on the spray nozzle circuit?
Wall. There is nothing there where you would expect to find it.
Located near the fan's power amplifier – and next to the battery – is a strip fuse.
Available, but unfortunately it doesn't help me. The fuse for the glow plug system is...
Not found anywhere. Does anyone else experience this problem? I assume it's related to...
Reimporting this car is quite different from what I'm used to.
Thank you in advance for your support.

Hello TDIMaster,

Here's a quote from the excellent Ulf:

"The preheating fuse often causes problems, and it's also well-hidden in some vehicles. For example, in a 1997 Golf 3, it's located on the top of the central electrical unit as an oversized flat fuse, making it difficult to access, while the owner's manual refers to the splash guard in the engine compartment."
In vehicles with a fuse box located on the battery, the glow plug fuse is usually located there as well.

I would also consider adding a temperature sensor in that location. If the sensor indicates "warm," the relay will not close for preheating.