Skip to main content
Contact Us
Technical Support
Order Status
Track Order
Remote Search:
rss feedour twitter pintrest youtubeinstagramtumbler

Vehicle Specific Remote Starters Replacement Remotes
Plug-n-Play Remote Starters
Code Alarm-Prestige-Pursuit-Ford Replacement Remote Search
Certified Refurbished Replacement Remotes
Code Alarm Chapman Replacement Remote
Vehicle Specific Ready Remote Starter Kits
Remote Keyless Entry Kits Vehicle Specific Ready
DIY Prestige 1Z-VSS Remote Starter Kit
3Z-VSS DIY Remote Starter Keyless Entry
Prestige 901Z VSS Vehicle Specific System
57Z-VSS Remote Starter Keyless Entry
Prestige 787Z-VSS Vehicle Security Remote Starter Kit
Plug&Play Remote Range Extender Upgrades
Smartphone Control Voxx CarLink ASCL6
Flashlogic Bypass Interface Kits
DIY Auto Alarm Keyless Entry Kit Vehicle Specific Ready
Prestige 596-VSS 2-Way LCD Alarm with Keyless Entry
FlashLogic iDatalink Firmware Programming
Code Alarm Remote Replacement Case Kits
Remote Car Starter Auto Alarm Keyless Entry Parts and Accessories
Installation Manuals Owners Manual
Code Alarm Remotes Technical Support
2day's Big Deals
DIY Remote Starter How to Videos
Installing Programming Code Alarm Frequently Asked Questions
Contact Us
Troubleshooting Remote Starter Installation
OEM Factory Remote Keys FOB's
Best DIY Remote Car Starters Product Reviews



TrustPilot Member
Order by Phone processed by Stripe
50 50 Payment Plan


MotorCityRemotes Remote Starter Car Alarm Troubleshooting BLOG


Read about common and not so common problems found with car alarms, remote starters and keyless entry systems.

Having a problem with a remote starter installation? Purchased a vehicle with an existing system and having some problems with it? Need a little direction or advice? Report your situation to us and we will be happy to try to help! With over 25 years of installing car alarms and remote starter systems there's a good chance we have seen the same problem and can provide some recommendations and/or the fix your looking for.

Thursday, March 28 2019

Reported Problem: Aftermarket Car Alarm Keeps Going Off!

Probably thee #1 reported problem in the history of car alarms is the complaint of the car alarm going off at all hours of the day and night. This would clearly be the most annoying problem you could have with a car alarm and for your neighbours!

Technically, the problem can be from a small list of causes, but fortunately most of the time, it's only due to a sensor being set to sensitive during installation or it just needs a slight adjustment after being in the vehicle after several years. And commonly the #1 culprit is known as a "shock-sensor" or "impact-sensor". These types of sensors as you can guess, detect specific levels of vibrations caused through the vehicle.

When these sensors are set to sensitive (like when an alarm installer tries to use a shock sensor as a glass break detector, which it's not meant to be used for, there are specific sensors for that) the alarm can false trigger with just the wind blowing against the vehicle, when a loud vehicle or motorcycle drives by it or even if a cat walks across the hood!

Shock/impact sensors are only meant to detect larger vibrations or impacts made to the vehicle. Examples would be vibrations caused by another vehicle backing into the vehicle, jacking-up or towing, or if someone literally took a baseball bat or a brick against the glass. Detection for any lighter vibrations made to the vehicle would require a different type of sensor.

The fix: A system's shock sensor is commonly found mounted under the driver's dash area (a.k.a. foot-well area). Usually they are mounted snugly against some factory wiring using a nylon zip-tie. The sensors can range in size from a 2" by 2" small plastic box to almost the size of a pack of cigarettes. They will also have a small 3 or 4 wire plug plugged into it. And, most of these sensors have color LED's built into them that will light up when you tap your finger on them.

When you think you found the sensor, look on the sides of the sensor and you will find either a small adjustment screw in a small hole or on some older systems a protruding adjustment knob sticking out the side of it (a.k.a. thumb pot adjuster that you can turn just using your fingers. The type found through a hole in the sensor is a small eye-glass phillips screw). No matter which type of adjustment you have they all adjust exactly like a volume knob. Turning it clockwise makes the sensor more sensitive (volume up) and counter-clockwise makes it less sensitive (volumn down).

The best way to begin the adjustment of a shock sensor is to turn the sensor all the way down (counter-clockwise) and then slightly turn it up 1/4 of the way. Now, to test the sensor's sensitivity; roll the driver's side window down, close all the doors and arm the system. Wait a minute, then reach in through the open window and bounce the side of your fist off the steering wheel (not excessively hard). Some sensors that are known as a "2-stage" sensor will just pulse the vehicle's horn or the system's siren. This is known as the "warn-away" response. If the sensor either sounds the warn-away signal or does not sound at all (sensors with single-stage sensing) this will probably be a good setting to leave it at and no further adjustment will be neccassary. Now if the system still false triggers, you'll want to try a lower setting or isolate the sensor from the system completely which is done simply by unplugging the plug from the sensor. 

If the system still triggers after you unplug the sensor you know its not the shock sensor causing the false triggering. But if it only falses with the sensor plugged in and after several attempts of making adjustments, you have a bad sensor that needs replacing.

Posted by: MCR AT 11:00 am   |  Permalink   |  0 Comments  |  Email

Post comment
Email Address

(max 750 characters)
* Required Fields
Note: All comments are subject to approval. Your comment will not appear until it has been approved.

VIEWS SINCE 03-01-2019:

Full Service Sales & Support Online, by Phone, Email, Live Chat & TxT 7 Days a Week!

MotorCityRemotes The Authority in Vehicle Specific Ready DIY System Kits Since 2002
Call Toll-Free: 1-866-244-8004
or "Tex-a-Tek" Product Questions 24/7 to:


Sales & Support Phone Hours:
Mon-Fri: 9am-8pm, Sat: 9am-6pm & Sun: 9am-4pm ET
CLOSED: Holidays & Holiday Weekends

Last Website Update: 10-17-2019 11:00 AM ET

Online Since 2002

National Net Marketing LLC
©2002-2019 National Net Marketing LLC

URL's Owned and Operated by National Net Marketing LLC
PO Box 338 Marine City, Michigan 48039 Protection Status

DMCA Copyright Act Protection: All original content is created by the website owner or published under permission including but not limited to text, design, code, images, photographs and videos are considered to be the Intellectual Property of the website owner, whether copyrighted or not, and are protected by Protection Service using the Digital Millennium Copyright Act Title 17 Chapter 512 (c)(3). Reproduction or re-publication of this content is prohibited without permission.

Digital Millennium Copyright Act: Is part of US Copyright Law. It addresses penalties for copyright infringement found on the Internet. This act protects content creators by "establishing procedures for proper notification" to OSPs when copyright infringement is identified online. Online Copyright Infringement Liability Limitation Act (OCILLA), Title II is part of the DMCA as Section 512 to the Copyright Act and creates a conditional safe harbor to liability for copyright infringement by online service providers. These procedures allow proper DMCA Takedown Notices to be filed by the owner of this website or, as their designated agent, to an OSP in case infringed material has been detected on their servers.

30 Day Returns Refunds
Remote Starter Ford F-150, F250, F350, 2-Way Remote Car Starter Kit Code Alarm CA5554 VSS
Code Alarm Remote FCC ID: GOH-MM6-101890, H5OT46, GOH-FRDPC2002, H5OT49, GOH-4BL98, H5OT59, CA630, CA530
Remote Car Starter Problems
Text Tech Support 24-7

Txt-a-Tek 24/7


DIY Remote Starter and Alarm Kits for Ford Mustangs
Code Alarm Chapman Ford Subaru Chrysler Mitsubishi Remotes
Latest Posts

DIY Dodge Ram Remote Starter Kit