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
3answers
109k 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 ...
14
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12answers
104k 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 ...
9
votes
1answer
104k 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?
1
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1answer
14k 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 ...
8
votes
3answers
23k 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.
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votes
3answers
8k 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 ...
4
votes
1answer
148k 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 ...
4
votes
2answers
20k 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 ...
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1answer
2k 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 ...
4
votes
1answer
6k 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 ...
2
votes
0answers
41 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 ...
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1answer
3k 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 ...