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48 votes
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Why is my car equipped with a battery shutdown timer?

It is a turbo timer. The theory is that an engine with hot turbocharger shouldn't be immediately turned off. The turbocharger may be damaged because there will be no oil flow. The timer ensures that ...
juhist's user avatar
  • 14.6k
7 votes

How does an ignition switch work?

Basically, your car has several circuits: Always On - Connected directly to the battery and is not affected by the ignition switch. This includes: alarm, interior lights, brake lights, headlights, ...
rpmerf's user avatar
  • 8,403
6 votes

OBD II Scanner refuses to communicate with the vehicle!

Courtesy of a SNAPON document If the scan tool does not receive data from an OBD II vehicle TEST 1: Connect the positive DMM lead to DLC pin 4 and the negative DMM lead to the negative battery ...
ElectronicsNewbie's user avatar
6 votes
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How would you stop if the ignition switch failed while driving?

The brakes should still work, but without power assist so they take more force. Same for steering. I would shift to N and then brake while heading to the shoulder. I had a K1500 Blazer of about this ...
jxh's user avatar
  • 148
4 votes
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Change electrical switch of the ignition switch on a Deawoo Cielo (1995)

On the front of the aluminium body of the ignition switch, it looks like there is a small screw that will need removing. Looking at the photo of an ignition switch for your car on amazon - http://www....
HandyHowie's user avatar
  • 25.4k
4 votes
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What are the Ignition Switch Wires for?

Wires carry electricity. Switches are mechanical contacts that disrupt / allow the flow of electricity. In all cases where wires and switches are involved, the wires allow current to flow from one ...
Jason C's user avatar
  • 4,890
4 votes

How would you stop if the ignition switch failed while driving?

In nearly all situations, the way you stop if the ignition switch is the way you stop if the ignition switch is working: you stop pressing the gas, and hit the brakes. It's literally that easy. ...
Cort Ammon's user avatar
4 votes

Can I switch my electronic ignition to one which uses a key?

can I switch that electronic ignition starting with an old-school key? No. At least, not anywhere near 'easily'. That ignition switch, from what I can see, has about 13 low-current wires. At least ...
isaacparrot's user avatar
3 votes

Can I switch my electronic ignition to one which uses a key?

Yes it can be done. There are various options depending on the fault. I have got around every fault the ignition module can give someway or another. If the key turns and but the steering lock doesn't ...
Newbie Noob's user avatar
  • 2,781
3 votes
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No start/crank following ignition cylinder fix (93 Camry)

Most ignition switches consist of two components: a rotary switch, and a lock cylinder (the part you removed the wafers from) that serves as the "knob" that turns the switch – but only if you have the ...
dlu's user avatar
  • 14.5k
3 votes

How would you stop if the ignition switch failed while driving?

The brake booster will support a few pumps so use 'em sparingly if in such a situation. After that it'll get harder depending on the weight of your car. An MPV will barely slow down without booster, ...
Bart's user avatar
  • 2,954
2 votes

How does an ignition switch work?

Adding to rpmerf's answer, in cars equipped with an immobilizer they are an integral part of the ignition switch and electronics, so probably worth a mention. There's a few different types but the ...
Jason C's user avatar
  • 4,890
2 votes

It is possible turn off a car with an electric signal?

This depends partially on the make/model of the car, but there are several different ways depending on what your goal is. With some newer cars, it's possible to feed data to the computer - although I ...
kyle_engineer's user avatar
2 votes

2008 Ford Focus Starting Problem

Look for corrosion at your battery cables and especially at the starter connection, and all electrical grounds. Clean off the corrosion with a steel brush if you can, replace the ends and lengths of ...
tlhIngan's user avatar
  • 12.2k
2 votes

Downsides to leaving ignition on without engine running (diesel)?

You'll need to check how your inverter/shore power is set up - some systems will only charge the leisure battery and not the vehicle's starter battery. Personally, I'd get a bigger 12v house-type fan ...
Nick C's user avatar
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2 votes
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(How) can you bump-start a car with a push-button starter?

There's likely some variation between the setup in different vehicles, but here's how it's set up on my manual trans Mazda 3 - The button will put the car into the 'ignition on' state if it is ...
Phil G's user avatar
  • 1,087
2 votes
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1999 Toyota Camry V6 automatic ignition switch / ignition cylinder issue

The "Blade Thingy" is pretty much just that a flat blade that connects the ignition switch and wheel lock with the ignition lock cylinder. When you turn your key in the lock-cylinder it turns this ...
narkeleptk's user avatar
  • 3,780
2 votes

1997 Subaru Legacy won't start after shorting ignition switch

The SBF-4 fuse in the main fuse box (under the hood, on the right side) controls the ignition system, and it was blown. To replace it, it needs a PAL-type fuse rated for 45A.
user3791780's user avatar
2 votes

Starting issues (turns over but doesn't fire) on a 2011 VW Routan (like Dodge Grand Caravan). Maybe electrical issues?

This is nothing to do with the key if its cranking. Almost ALWAYS with this model it will be the built in fuel pump relay inside the TIPM (fuse box under hood). You can replace the tipm or you can ...
narkeleptk's user avatar
  • 3,780
2 votes
Accepted

Old spare key not starting engine

Keys (or just fobs for pushbutton starting) are tied to the vehicle. They are programmed into the computer through whatever method the manufacturer sets up. To identify the key, there's an RFID chip ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Did I damage ignition switch, could it already have been bad, how to avoid in future?

FWIW, you can likely fix your mistake by covering the bare copper with solder.
lericson's user avatar
  • 203
1 vote
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Did I damage ignition switch, could it already have been bad, how to avoid in future?

Sanding was obviously too aggressive. I recently fixed several switches by spraying them with DeoxIT. You don't even have to disassemble the switch, just spray & soak!
Carguy's user avatar
  • 1,967
1 vote

Is my ignition switch cleaning ok?

With out plating the copper is a much softer metal. It will wear a lot quicker then it is suppose to and will need replacing. I guess in theory, Once the contacts start getting thin then there could ...
narkeleptk's user avatar
  • 3,780
1 vote

Engine stays on when ignition key is turned off

Nice car, I've always liked that shape! Keep it rust free if you can. There is a phenomenon called dieseling, which is where an engine runs without the ignition system being powered up due to auto-...
GdD's user avatar
  • 17k
1 vote

2001 honda civic key

Ignition barrels aren't usually very complex things: there's a metal lock cylinder into which you insert the key and either the key pokes out of the deep side of it, or a metal lump attached to the ...
Caius Jard's user avatar
  • 1,145
1 vote

Ignition wont turn on Volvo 2005 s40, existing key broke into ignition

Your tech was correct - pairing a new key to an S40 involves turning the ignition. If it won't turn you can't pair the key to the car. You can't reprogram the key itself (to imitate the old one) as ...
motosubatsu's user avatar
  • 10.1k
1 vote

Installing an external ignition kill switch on a 2015 VW Golf?

Why not a magnetic switch on the upper bonnet shroud below the windscreen? Use a black thing that you just put a magnet on as you get up to the car and the magnet is easily removed as well... For ...
Solar Mike's user avatar
  • 34.6k
1 vote

Downsides to leaving ignition on without engine running (diesel)?

If you are hooked up to mains power, then a possible solution is to use a small inverter (approx 10A) or an "old" battery charger (newer chargers are "smart' and recognize the battery, so may not ...
Solar Mike's user avatar
  • 34.6k
1 vote

how do I replace the lock cylinder on my truck

To replace the cylinder, you need to pull the horn button, then unscrew the nut holding the steering wheel on. Once removed, wiggle the steering wheel back and forth (one side to the other) with some ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Electronics only work occasionally

This sounds like a poor or loose connection for the wires from or to the ignition switch or the fuse box. These are the places where those items will have common points of connection - ignition ...
Solar Mike's user avatar
  • 34.6k

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