Where is the fuel shut off switch on a 98 passat?

Fuel shut off switch may need to be reset. A friend of mine had it trip when he had a flat tire some years ago on ford car. The reset on his was behind the plastic piece to the right of where the video below. Video below shows fuel shut off/inertia switch on upper floorboard passenger side.
Inertia Switch Explained Removed and Replaced 98-12 Ford Ranger - YouTube
2002 Ford Ranger Fuel Cutoff Switch - YouTube
You can try swapping out your fuel pump relay to make sure the relay is not bad. Below link may help
1999 Ford Ranger Fuel Pump Relay, Fuel Pump Fuse & Starter Fuse Location - YouTube

Your vehicle doesn't have a FPDM . No fuel pressure ? fuel pump relay or inertia fuel shut off switch .

I think you either have a faulty headlamps change over switch, or incorrect wiring connection

The fuel pump shut off switch ( inertia switch ) is in the drivers footwell behind the kick panel. The panel is probably held on with clips and will pop off with a light tug.

Do not worry, follow these checks,

• fuses dedicated for both of them
  
• fuel sensor and temp. sensor
• their power supply
• display panel, wiring,etc
• Pls vote!!
  

chances are the spring that opens the flap is weak,just replace the spring.if it gets stuck shut pull away the carpet/trim from inside the trunk to get to the flap wire.

How long are you cranking for,if you have allowed to run out of fuel, it needs to be primed, try pouring diesel into the fuelfilter, but I used tohave the 110bhp AFN passat and it would start after cranking for a while and then cut out, then start but possibly cut out again, then start and give it some throttle, should be fine after that.

You need a new cam shaft sensor.

on my 98 ford explorer it is below the glovebox in the foot well area on the forward right hand side, red button on top, cannon plug connects to the bottom side of it right where the carpet ends