Viper 791 Key start

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sopedish

Member - Posts: 25

Joined: October 04, 2004

Location: United Kingdom

Posted: September 18, 2005 at 5:46 PM / IP Logged

2003 Ford Explorer

My remote start works just fine, but my truck won't start with the key. Any ideas? The keys are the originals, not copies. The copy is in the bypass. By the way, I just moved to England, so no authorized viper dealers here. The forum is my only hope.

mo12v

Platinum - Nominee - Posts: 2,748

This member consistently provides reliable information

Joined: September 30, 2003

Location: Afghanistan

Posted: September 18, 2005 at 6:43 PM / IP Logged

When you say it wo'nt start with Key...............Does it CRANK ?

Does your Security Light Flash??

Don't Learn from Others Mistakes

You Might Be the One That Knows.

Chris Luongo

Platinum - Posts: 3,746

Joined: May 21, 2002

Location: Massachusetts, United States

Posted: September 19, 2005 at 7:46 AM / IP Logged

A few possibilities:

1. As mo12v says, it's possible that the car is not recognizing your transponder key.

Remote-start the car and observe the red light atop the dash---it comes on solid for a second, then goes out. Now try to start it with the key----if the light is flashing, your key is defective or has become unprogrammed.

2. The Viper has a starter-kill feature which the installer probably DID hook up. If the alarm is armed, the car will not start.

sopedish

Member - Posts: 25

Joined: October 04, 2004

Location: United Kingdom

Posted: September 21, 2005 at 10:49 AM / IP Logged

The light does flash rapidlly when I turn the key(factory LED). The blue viper LED does nothing. It does it with both of my factory keys. It does start with the key sometimes, but that is very rare.

sneakycyber

Silver - Posts: 413

Joined: September 13, 2005

Location: United States

Posted: September 21, 2005 at 10:59 AM / IP Logged

Sounds like your keys have become un-programmed. When the factory security light blinks rapidly during crank it means that it is receiving an incorrect singal from the transpoder. Unfortunatly without the 2 original factory keys (the ones that dont work) I have no idea how to program new ones.

sopedish

Member - Posts: 25

Joined: October 04, 2004

Location: United Kingdom

Posted: September 21, 2005 at 2:40 PM / IP Logged

Other than the fact that it's a Ford, how could both keys get deprogramed? Would it have anything to do with the bypass mod.

kgerry

Platinum - Posts: 3,455

Joined: February 07, 2004

Location: Saskatchewan, Canada

Posted: September 21, 2005 at 4:18 PM / IP Logged

it could if the module were active without key sense hooked up... the vehicle would see conflicting or duplicate codes....

Kevin Gerry

Certified Electronics Technician

MECP First Class Installer

Owner/Installer

Classic Car Audio

since 1979

gus1

Gold - Posts: 1,013

Joined: October 15, 2003

Location: Canada

Posted: September 21, 2005 at 11:50 PM / IP Logged

if it's a 556U or a 555U, then it's active all the time unless keysense is hooked up (dammned DEI.... why in the world would they do this???)

Try grounding the green wire on the 556/555U that they used in there and see if it solves the problem.

Gus

Wherever I go, that is where I end up......

sneakycyber

Silver - Posts: 413

Joined: September 13, 2005

Location: United States

Posted: September 23, 2005 at 9:40 AM / IP Logged

gus1 wrote:

if it's a 556U or a 555U, then it's active all the time unless keysense is hooked up (dammned DEI.... why in the world would they do this???)

Try grounding the green wire on the 556/555U that they used in there and see if it solves the problem.

Gus

Good Catch I forgot that if the security see's 2 keys it will lock the system up.

EDIT: Some cars when the security locks up the ignition it takes 15 min to clear, Not sure wich ones exactly but good rule of thumb is dont try it with any of them. Warn your customers not to show off their remote starters with their keys in the ignition.

kgerry

Platinum - Posts: 3,455

Joined: February 07, 2004

Location: Saskatchewan, Canada

Posted: September 23, 2005 at 10:32 AM / IP Logged

ISNT THAT WHAT I SAID?? ha ha

Kevin Gerry

Certified Electronics Technician

MECP First Class Installer

Owner/Installer

Classic Car Audio

since 1979

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