Yes, replace the bulb. It's very easy to take
When crankshaft sensor is knackered engine will start but will stop after 5-10 minutes and when warm it will be very hard to start it.
Camshaft sensor - only revs limited to 4000-45000 and then engine splutters.
It takes ca 30-40 to take it out. Move Blower Vents completely down as this is the best position, you can take them out.
Move steering wheel down - this will help you to get access to the firs screw.
When you can move the whole panel, try to take only left side and look behind it - you have to unplug the MID/TID display. There is a black holder on the plug - pull it and the plug will go out. Then, pull the panel and move it to the left gently.
VX genuine are made by Siemens, so you can get these from E-Bay. Don't go for "no-name quality product" as 20% don't work at all and 30% don't work as they should.