Fuses That "Blow" Repeatedly
Without being able to "hands on" troubleshoot the circuit served by the repeatedly blowing fuse, no one can identify the specific cause/defect which is causing your problem.
The following generic answer applies to any electrical circuit, whether in a vehicle or in a building, or whether alternating current [AC] or direct current [DC].
Fuses [and Circuit Breakers] are safety devices designed and installed in electrical circuits TO PROTECT the conductors [wires] and other components from short circuit conditions and/or overload conditions which can cause extreme flow of electrical current [measured in Amperes], and overheating of the conductors that can result in damage to the insulation and the conductors. And in a worst case, the probability of a FIRE which could destroy the vehicle, house, or other structure in which the circuit is located.
When a fuse [and replacement fuses, or "tripping" Circuit Breakers] "blow," especially if it happens repeatedly, is an indication of an UNSAFE CONDITION in that circuit, usually a short.
The fuse or circuit breaker is doing what it was designed, intended, and installed to do, protect the components of the circuit which it serves.
The proper "fix" is for a qualified technician, who knows what he or she is doing, to troubleshoot the involved circuit, find and identify the defect, and make proper repair [s], BEFORE replacing the fuse again [with the properly sized fuse or before resetting a circuit breaker].
Some ignorant few will suggest installing a larger fuse or breaker to solve the problem, BUT that will only increase the hazard, not correct it. Do not follow "bad" advice and install a larger fuse in a misguided attempt to correct the problem. To install an oversized fuse would almost guarantee damage to the wiring and an electrical system fire.
I checked fuses and replaced blown fuses and now it won't start.
Find out why the fuse is blowing. You have a short or the circuit is overloaded.
Check your fuses.
I'm not sure I understand your question. I can't tell if you have one or two different fuses "blowing." The only thing which causes fuses to "blow" is a short circuit condition in the circuit which the fuse protects. IF you have two different circuits blowing fuses, then you have at least two short circuit faults. j3h
There is an electrical short to ground in the fan switch or in the blower motor itself.
The 50 ampere engine fuses is blowing because more than 50 amperes of electricity is passing through it.
could be that the regulator in the alternate is failing and causing power surges in the electronics and the fuses are blowing to prevent damage to the device and vehicles wiring.
On the 2001 Passat, the fuses and relays are located on the driver-side of the dash right where the door touches it. It is behind a plastic panel which can be pulled off to access the fuses. Pull off panel and there is a guide to the fuses (fuse card) and a tool for pulling them out.
http://shakti.trincoll.edu/~sritchie/Passat_fuse_panel.html This should answer all of your questions about the fuses, what they are for and what amprages to use.
There are actually two ABS fuses on a 2000 Passat. One is located under the hood and one is in the main fuse block which is under the dash.
There is a short somewhere.
there is a short somewhere in dash or heater, you need to fix that to stop fuses blowing