Questions tagged [fuse]

An expendable (single-use) electrical component that safeguards an electrical circuit by melting or otherwise interrupting the flow of current if the current exceeds the designed limit.

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20
votes
3answers
10k views

Should I replace fuses as a part of regular maintenance?

I've been having a few problems that might be electrical in my car. Seeing as mechanics always want to replace parts first, I'm having to diagnose this problem myself. It seems like replacing all ...
16
votes
4answers
2k views

40amp protection on 25amp rated wiring?

Q - why is the circuit described below protected with a 40amp fuse when the cable to the motor is 2mm² (I cut a bit of cable out and measured strand thickness and quantity, 37 * .26mm = 1.98mm²) and ...
14
votes
5answers
931 views

How do you test analogue electrical circuits?

When trying to diagnose problems with conventional analogue electrical circuits, such as lights, speakers, heated rear windows, etc, as well as short-circuits and unexplained current draws, it can be ...
12
votes
5answers
68k views

How can a fuse drain a car battery?

My car battery drained itself after a week of not being used. I was researching how to identify the cause, and saw a comment under this article saying: What if I am not detecting a reading but the ...
12
votes
3answers
9k views

How to test a bolted-in heavy duty 50a / 80a / 100a fuse with a multimeter without removing it?

I want to check if this particular 50 amp fuse on a RAV4 (1998 first generation) is blown or not. Just looking, it's hard to tell because of what I assume are blue-green deposits on copper (this is ...
11
votes
7answers
51k views

Fuse box above battery melting

I have a 2001 VW Beetle which has a nasty habit of melting the above battery high voltage fuse box. I've replaced it three times already and replaced the alternator as well, but I'm at a complete loss ...
11
votes
1answer
11k views

How to remove the 50 amp, 80 amp and 100 amp fuses from the positive terminal of a RAV4?

I want to check the fuses at the positive battery connection of my 1998 (first generation) Toyota RAV4. Visually, the 80a and 100a look fine, but the 50a has blue deposits and I can't tell if it's ...
9
votes
1answer
29k views

Indicators Not Working But Hazard Lights Working

Vehicle: Mitsubishi Pajero 1994 I have a 1994 Pajero and had a strange problem happen this morning, in the middle of driving the indicators strangely stopped working but when I pulled up the hazard ...
7
votes
3answers
51k views

Cigarette lighter fuse repeatedly blows

I have a 2000 Toyota Corolla. Recently, the fuse for the cigarette lighter blew when I put in a car charger. The fuse powers the cigarette lighter as well as the radio and I think the backlighting on ...
7
votes
4answers
49k views

Preventing Car Theft by Removing Fuses

My car was recently stolen in the middle of the night, and I just bought a replacement. I'd like a simple, cheap way of disabling the vehicle, and I was thinking of doing something like just pulling ...
7
votes
1answer
3k views

Does a constant blown fuse always indicate a short?

My wife was driving our 96 Ford Windstar recently and she said right after she hit a bump in the road the ac stopped working and the instrument panel lights went out. I found the fuse from the wiring ...
7
votes
1answer
346 views

Seat heater fuse at 12V even when ignition is off?

I'm looking for a fuse in my 2015 Honda Odyssey that is 0v when ignition is off. I thought the passenger side seat heater should be the one but I tested 12 V when ignition is off. Is this normal?
7
votes
1answer
94 views

Radio and Charging Outlet Stopped Working

I have a 2000 Honda Accord V6 LX. The radio was working yesterday and the charging outlet was working earlier today, but now neither are. Did some research and I'm assuming it could be a blown fuse. ...
7
votes
1answer
3k views

BMW E90 pre facelift - REST heat button / fuse

In my E90 I have a REST button: It seems not to work, when I press it, the LED won't light and the heating won't work. Could this be a defect fuse? And if yes, which one (could it be 15 and/or 67)? ...
6
votes
6answers
36k views

Brake lights, but no tail lights

I've got a 2001 WJ 4.0, The right brake light wasn't working, so I installed a new bulb, but I must have done something in the process because now all my brake lights work but I have no running lights....
6
votes
1answer
218 views

Any reason I couldn't replace my entire fuse box with self-resetting breakers?

I'm always rewiring something or upgrading a component here or there on my vehicle. I recently discovered self-resetting breakers that can replace standard automotive fuses. This seems like a silver ...
6
votes
1answer
8k views

A fuse slot has disappeared

My 2003 Opel Agila has recently had a catastrophic electrical problem, and my electric mirrors do not work anymore. The recovery guy pulled out and replaced a few fuses, and I drove home all fine. ...
6
votes
1answer
179 views

How to Track Down an Electrical Short

In a previous question regarding my dashboard lights not working I found that the "tail" fuse would burn out immediately upon turning on the headlights. This is after someone did repairs to the horn, ...
5
votes
5answers
3k views

Could corroded or incorrectly soldered battery teminals cause parasitic drain?

One of my friends has a 2007 Lincoln MKX that's been having some electrical issues lately, the battery drains to dead overnight. It's been looked at by several people (including dealership), the ...
5
votes
3answers
10k views

Fault find blown cigarette lighter fuse

I have a 2005 ford focus mk2, nothing custom, nothing modified, all stock. The cigertte lighter has never worked so I thought it was about time I attempted to fix this. I removed the fuse (20amp) ...
5
votes
1answer
22k views

Fuse box location for 2006 Renault Scenic

I've have a 2006 Renault Scenic 1.6 Liter. I can't seem to find where the fuse box is located as it's not where it says it is in the handbook. The cigarette lighter fuse has blown but cant find the ...
5
votes
2answers
3k views

1996 Toyota Camry unlocks and locks itself

my 96 Camry started locking and unlocking itself sometimes while driving and sometimes when not driving I will go to get into my unlocked car just to find it lock. It didn't really bother me til last ...
5
votes
2answers
285 views

Multimedia system fuse detach

I have a problem in the multimedia system in my car. Whenever I leave the car off for two days (like the weekends for example), the multimedia system drains the battery and, subsequently, I have ...
5
votes
1answer
1k views

ECM Fuse Blown what to test next

Recently I was on the highway and suddenly my car broke down and it was cranking and all but not starting so I knew some fuse has blown. I removed the indicator fuse and used it for fuse which gave ...
5
votes
2answers
15k views

Could a fuse be responsible for my VW Jetta not shifting while in drive?

Issue with my VW Jetta (2001) Automatic transmission, gasoline engine My tail lights were out because of a missing fuse. So in the dark I looked to find a good one to replace it with (of the ones ...
5
votes
2answers
586 views

1993 Honda Civic keeps blowing the 50 amp fuse under the hood

I replaced the ignition switch first, since in my Haynes book, it is what is directly connected to the fuse. The car works fine for a day then blows the fuse again.
4
votes
1answer
125 views

Wiper fluid sprayer no longer works on Nissan Sunny 1997. Could it be a blown fuse?

When I try to activate the wiper fluid spray on the front windscreen of my car, the sprayer pump no longer activates (the wipers do though, after a short delay). It's quite a noisy pump, so I'd hear ...
4
votes
1answer
400 views

Dodge 2006 Grand Caravan fuse F6

I have a 2006 Dodge Grand Caravan. I'm currently troubleshooting an issue with it not starting. As I was checking the fuses I came across fuse F6. According to the manual it is "12 Volt Out Ignition ...
4
votes
1answer
2k views

A back door power window on a 2012 Subaru Forester not rolling up

On our 2012 Subaru Forester, the back window doesn't roll up anymore. Neither the button on the driver's control switch, nor on the door itself has any effect. There's no response to the button and we ...
4
votes
1answer
747 views

Wiring Harness / Fuse Panel Repair

I have a 2006 Dodge Magnum and a friend of mine was changing the starter. Forgot to unhook the battery. And when the hot wire on starter grounded out it Melted the Negative battery cable until it ...
4
votes
2answers
4k views

Jetta turns off immediately after starting

So I parked my Jetta ('06 2.5) 2 nights ago, when I went to start it yesterday morning, the starter seems to work fine- turns over, then instead of idling down, it turns off. Must have tried it 5 ...
4
votes
2answers
30k views

Why does my ALT fuse keep blowing?

After grounding out my alternator lead battery wire, I had to replace the 120 amp fuse that connects to the alternator. After replacing the fuse the car started up fine but upon driving home and ...
4
votes
1answer
2k views

How long should fusible links be?

I've installed a 12" fusible link as a replacement for a fusible link on the line that charges the battery from the alternator. I showed the OEM part to the guy at the parts store and he gave me a 12" ...
4
votes
3answers
22k views

What's the correct fusing for a headlight relay?

Summary of the situation: I have a 1975 Ford truck that suffered from the "Ford flashing headlight problem". The factory wiring uses 18ga wires over a very long path and through an under-rated ...
4
votes
0answers
593 views

Toyota Celica ST185 problem, doesn't start [closed]

Hello i have a problem i own a Toyota Celica ST185 Carlos Sainz Limited Edition. (btw. English is not my national language so sorry for eventual errors). The problem is that car has problems with ...
3
votes
2answers
1k views

Lost electricity to cab and Engine won't turn over

My '94 mazda b4000 recently lost electricity to the cab and the engine won't turn over. I will get in, the seatbelt beeping will start, then that will stop. I will put the key in the ignition and ...
3
votes
3answers
802 views

Connecting Fuse Tap to another Fuse location

This question is similar to can i split off another circuit from fuse box to run power to cigarette lighter?, however I want to know the mechanics of mismatching amperage when it comes to fuse tapping:...
3
votes
1answer
5k views

How to diagnose blown tail lamp fuse

Last night, the passenger-side tail-light on my step-daughter's 2004 Mitsubishi Lancer ES went out. After determining that the bulb was OK, we looked in the fuse box, and saw that one of the two 7.5 ...
3
votes
1answer
18k views

Toyota Tacoma 2007 fuse diagram

I am having bad luck searching online to find a concise fuse diagram for my Tacoma. I am a little frustrated with the abbreviations that are on the diagram on the box cover. In particular, I need to ...
3
votes
1answer
332 views

Given a fuse panel, which way should a fuse tap be facing?

I'm hardwiring my dashcam into my vehicle after getting sick of the power cable dangling down the center. I have everything run, but want to ensure that I am using the fuse tap (pictured below) ...
3
votes
1answer
2k views

Need urgent help - car cut out and instruments frozen and will not start

I have just broken down. I am safe. My car has suddenly cut out and my instruments are frozen. The car will turn over but it refuses to start. My fuel gauge is stuck as well. My engine is cold so I do ...
3
votes
3answers
673 views

Replacing a boat's blown CDI fuse

Just rebuilt most of a 2 stroke jet boat. (if you need / want any boat details, see: this thread) Yesterday, she fired right up no problem, today she won't even turn over. After some basic ...
3
votes
1answer
623 views

Mercedes - What is this type of fuse?

The fuse in the picture seems to have a grounding cable: What is it called and can I purchase from other than Mercedes retail e.g. eBay? Note: I know it is housing a standard 15A fuse, but can I ...
3
votes
1answer
796 views

Blown fuse on K1 GSXR 600. Fuse replaced, but still no power

I have a GSXR 600, and the live side of a circuit touched the frame and blew a 30A fuse. I changed the fuse and now I have no power. Does any one now why? Thanks
3
votes
3answers
897 views

Startup current DC motor - Fuse?

In my boat I have a 2.2 kW starter motor, last week the starter motor shorted and melted one of the cable lugs. The starter motor is connected directly to the battery without fuse, so now I want to ...
3
votes
3answers
5k views

Diagnosing Vehicle Brake Lamp Fuse Blowing; What to test next?

Fuse keeps blowing when I press the brake pedal on a 98 Windstar. Brake switch is good. Inserted new fuse and the brake lamps do not light up before the fuse blows. Removed all bulbs front and back ...
3
votes
1answer
2k views

Shifter(auto) stuck in park and override won't work

I have a 2005 Toyota Tacoma TRD that won't shift out of park. I just came back from a 3-month trip and went to drive my truck somewhere but it wouldn't shift out of park. This has happened before as ...
3
votes
1answer
4k views

LED Headlight flickering

I just recently bought an LED headlight set for my 2010 Honda CRV LX. The LED headlights fit perfectly and function properly with low and high beams. The only problem I have is when my CRV is on and I ...
3
votes
3answers
5k views

Pontiac Sunfire mysteriously won't start

So, here's the deal: -No lights, no noise, no clicking. -Battery voltage reads fine on multimeter. Terminals are very clean and not corroded. -But it won't jump start. -Headlights turn on. -Fuses are ...
3
votes
1answer
514 views

My 96 honda civic will not start please help!

Ok I will try to make this quick and short as much as I can. so a couple weeks ago I put the drivers side power door on my 96 Honda civic hatch. everything went well until a couple of days ago I tried ...