Remote start not working
Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
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From: Louisiana
Remote start not working I have a viper 7752v alarm on my truck, recently I noticed my remote start would not work. The lights will flicker and the gauges as well like its getting power shortly but does not crank the truck. It just happened all of a sudden. One day it would crank the truck and the next day it would. Lock/unlock still works. I don't know much about alarms so any info on where I can troubleshoot will be appreciated.
Teching In
Joined: Jan 2021
Posts: 44
Likes: 5
Does it start normally with the key? If so, then I would check the remote start unit under the dash to see if any of the fuses are blown. It may also have a standalone relay to check as well. The 7752v appears to just be the remote style thats compatible with a variety of systems. Can you see if there is a model number on the actual alarm box?
Thread Starter
TECH Fanatic
Joined: Oct 2022
Posts: 1,776
Likes: 627
From: Louisiana
Does it start normally with the key? If so, then I would check the remote start unit under the dash to see if any of the fuses are blown. It may also have a standalone relay to check as well. The 7752v appears to just be the remote style thats compatible with a variety of systems. Can you see if there is a model number on the actual alarm box?
Teching In
Joined: May 2012
Posts: 5
Likes: 1
Two easy things to check for, first is a physical on/off switch that may be under the dash or on the kick panel. It will be a silver post type switch about 1/2" long. All Viper systems include one, whether it was installed or not is up to the installer. Used for service mode, it can be inadvertently flipped off which disables remote starting.
Second, check under the hood for an installed pin switch. If it's present (again, included but up to the installer), they are generally placed along the radiator core support or on one of the fenders. It's a plastic pin spring loaded in a metal casing which grounds the contact when it's extended, closing the hood pushes it down and enables remote starting through the open contact. Over time most all will fail, the plastic becomes brittle and the repeated contact pressure with the hood opening and closing eventually snaps them off. If the plastic pin head breaks off, the system thinks the hood is open and disables remote starting capability indefinitely. If this is the case, the quickest fix is to unplug the wire attached to the bottom of the pin. This will stop the wire from being grounded, allowing the remote start to function. They're cheap and easy to replace if you want to keep the safety feature intact.
There is also a diagnostic indicator that tells what caused the car not to start, but these two problems are generally the most common if no cranking attempt is made when you try to remote start it. If neither of these help, the diagnostics would be the next step.
Second, check under the hood for an installed pin switch. If it's present (again, included but up to the installer), they are generally placed along the radiator core support or on one of the fenders. It's a plastic pin spring loaded in a metal casing which grounds the contact when it's extended, closing the hood pushes it down and enables remote starting through the open contact. Over time most all will fail, the plastic becomes brittle and the repeated contact pressure with the hood opening and closing eventually snaps them off. If the plastic pin head breaks off, the system thinks the hood is open and disables remote starting capability indefinitely. If this is the case, the quickest fix is to unplug the wire attached to the bottom of the pin. This will stop the wire from being grounded, allowing the remote start to function. They're cheap and easy to replace if you want to keep the safety feature intact.
There is also a diagnostic indicator that tells what caused the car not to start, but these two problems are generally the most common if no cranking attempt is made when you try to remote start it. If neither of these help, the diagnostics would be the next step.
