Questions tagged [key]

A key is an instrument that is used to operate a lock. A key is usually intended to operate one specific lock or a small number of locks that are keyed alike, so each lock requires a unique key. The key serves as a security token for access to the locked area; only persons having the correct key can open the lock and gain access.

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8 votes
3 answers
136k views

Can I reprogram a used Mercedes smart key?

I want a new key for my Mercedes Benz and I've heard that you can get a used smart key for much cheaper than a new one from a licensed Mercedes mechanic. Can I reuse an already programmed Mercedes ...
Ben Brocka's user avatar
15 votes
12 answers
120k views

Couldn't start my Volvo due to Key Error. Called assistance and he fixed it by hitting the key with a screwdriver. What could be the error?

My Volvo S40 (06) would not start when I turned the ignition key. I got a message that was somewhat like "Key Error, please try again". I tried with both my keys so it wasn't the key itself. I think I ...
FeatureCreep's user avatar
10 votes
1 answer
116k views

I lost my Mercedes smart key, how do I get a new one?

If I lose a Mercedes smart key fob, how do I get a replacement? Is there anything I should do to prevent the old key from being used if it was stolen?
Ben Brocka's user avatar
1 vote
1 answer
23k views

How to synchronize a VW Fox remote fob?

A few months ago my remote key fob stopped working. Although the light on the remote was flashing when I pressed any button, I tried to replace the batteries. However, this didn't help. Then I tried ...
Mantelijo's user avatar
  • 139
8 votes
3 answers
28k views

How do I add a second key fob to my 2008 Prius

I have a series II 2008 Toyota Prius. I purchased a second key off of eBay and would like to program it for ignition and remote control.
brianegge's user avatar
  • 271
5 votes
3 answers
11k views

Start a circuit or device when you insert key in car ignition

I want to start a circuit in my car when I insert my key in car ignition and let it turn off when the key gets removed. I have Honda Civic 2007. Can someone just help me out as to from where do I take ...
Humayun's user avatar
  • 153
5 votes
3 answers
37k views

What does it take to program a used ECU?

I own a Mazda MPV 2000 with a faulty ECU. The vehicle has an immobilizer. It will not start with the former ECU. It floods the engine with fuel. After extensive diagnostics on the vehicle and the ...
ElectronicsNewbie's user avatar
4 votes
1 answer
10k views

Current from key to solenoid of starter motor relay

I am considering installing a starter motor immobilizing relay inline with the starter setting of the key and starter solenoid. I recently got a MAH-112-C-4 online. It has a 30A switching ...
SeanJ's user avatar
  • 491
4 votes
1 answer
188k views

Remote does not always lock/unlock the car: diagnosing RF receiver issues

The remote central locking thing on my car key does not alway lock or unlock the car. Sometimes it works right away, sometimes I have to press it dozens of times before it works, sometimes it never ...
Bas's user avatar
  • 407
3 votes
4 answers
30k views

Honda Odyssey alarm goes off randomly

I have a 2002 Honda Odyssey that has recently developed an annoying habit of having its alarm go off unnecessarily. There is no discernable pattern for when the alarm goes off - it has happened in ...
Digital Trauma's user avatar
2 votes
0 answers
201 views

lost key for 76 chevy pickup

I would like to know how to stArt my 76 chevy pickup without a key. The steering column is not locked but the ignition switch will not turn. It is a four speed standard transmission. I dont have ...
SAMMY's user avatar
  • 41
1 vote
1 answer
5k views

Can I program a new key for my Toyota Corolla 2013?

I just bought a used Toyota Corolla 2013 (manufactured 2013-03), but it only came with one key. Today, I called the local Toyota dealer to ask how much was a new key and they told me it was nearly 500 ...
AlexV's user avatar
  • 125
1 vote
1 answer
3k views

Unable to unlock driver's door with key in Toyota Yaris

I have a Toyota Yaris 1.3 from year 2000. Yesterday I was unable to unlock my driver door - the key won't turn (either direction). The key works on the passenger's side. It's not frozen, temperatures ...
Dávid Molnár's user avatar