I opened the door, Im assuming it let me open it since I had to fob in my hand, and the car started fine. Car key remote fobs are a nice convenience to have, but they all stop working eventually. Remote is in 2nd car mode – Some remote car starters have the ability to control 2 vehicles from 1 remote. 2 is not used unless silent lock/unlock is being used. Daniel - Austin, Texas Viper Color OLED 2-Way Remote Start + Security System This product does everything you need, the best part is by the LED confirmation, you will know if your car starts. Key fobs not working all of a sudden So tonight I go out to see if it will start and let it run for a bit and the key fob doesnt unlock the door or do anything. I purchased a used 98 Ford Explorer (auto) 18 months ago, and it came with a Viper 300 alarm/remote starter already installed. Viper SmartStart is brought to you by Viper, the leader in vehicle security and remote start systems. It has four buttons labeled 1 thru 4. 3 works the remote start on and off. No AUX button on the remote. My husband has a remote start the dealership put in, and if you're not close to the vehicle to hear the horn beep, you're out of luck. If your remote has this feature and it was accidentally put into 2nd car mode, it will not communicate with your vehicle. Once you replace the battery the remote will stop working. I have taken it back to the installer and they are unable to get it to work. This is a good remote until you have to change the battery. After getting everything hooked back up I just happened to notice the remote wasn't working … Consult your fob remote car starter's instruction manual. If you have lost it, go to Program Your Remote's website. An example of this would be husband and wife both having remote car starters but not wanting to carry two remotes. Step 2. 4 is not being used. Learn more with 204 Questions and 255 Answers for 2-Way Remote for Viper Remote Start Systems - Black. If the battery is not the issue, proceed with the next steps. Find many great new & used options and get the best deals for Viper 2-Way LED Remote 7856V For 3606V / 4606V / 4806V / 5806V NEW Style 7857V at the best online prices at eBay! I've gone through the programming but it never seems to save the setting. This will be the 3rd remote that will need to purchase after the original 2 died after I replaced the battery. Free shipping for many products! 1 unlocks/disarms and locks/arms. Even if it's just a dead battery, you can pretty much guarantee that your car doors will fail to unlock with the remote at one time or another. Replace it if your not sure if it's working and test the remote. It's just so strange that it wont work, my remote has a cracked LCD screen, but the damn thing was working fine up until I had my battery ground disconnected yesterday. [before you reply with something witty to say about Ford vehicles or Viper alarms, please understand I really dont care. 1 thru 3 are grey and 4 is orange. I hold function until the orange light comes on, then press the unlock button so the led stays on signaling the beep should No Sound on Viper 7856V Remote - For some reason I cannot get my viper 7856V remote to make any sound.