My 2005 modus stood for a while wouldn't start so changed battery and red light is solid still won't start get no noise and mercanic done diagnostic got no faults he is confused help

SOURCE: 2005 ford taurus. Remote entry wont work theft light keeps blinking when key is engaged

HI, I'm reading your problem,
Let me explain something about your car.

2005 Ford Taurus, The key on that car has Chip inside of the key and receiver on the ignition switch,
Check if the key you are trying to use is Black and has a plastic head.
If not you need a key with that characteristics.
But if you have the right key, Remenber if you had drop on the floor, or hit with something,
Because some times they come damaged, with insignificat thins.
Remenber if you left the key close to a magnets like speakers.

If nothing aply at your case, you need to call a place Aloha Smith, they have the computer to program or reprogarm your key. IF not you can't start your car.

OK.. I hope this information work for you.

Thank's for submit yous question on fixya.com

SOURCE: Radio, dome lights and EVIC power problem

I found a paritally blown fuse. When the fuse blew metal pieces ended up partially making contact. After replacing the fuse everything worked great.

SOURCE: 2003 Renault Laguna 1.9Dci - steering wont unlock - cannot start

Hi this was exactly the problem i had with my Laguna 1.9dci its a sensor switch on the steering column. Cricical circuit to the car. so will not run without it. afraid you will have to replace the sensor. had to get renault to do mine.

SOURCE: left key in ignition overnight, now car wont start

try checking the main relay under the dash

SOURCE: Key fob won't unlock or lock car VW Golf 2000

my mum had a similar problem and it turn out the code the key transmits to the engine had gone wrong she took it to a vw dealer and they reprogrammed the key. it works fine now and is a common problem. hope that helps