The light control module is too sensitive

RP OPTICS delivers premium fiber optic cables, drop cables, splice closures, connectors, SFP transceivers, power meters, cabinets and infrastructure for FTTH, PON, smart cities and data centers.

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Jan 11, 2026

Sensor too sensitive

Hey Arduino Form users I won''t give too many specific details on what I''m building however one will easily pick it up given the context. Anyway, I''ve got

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Nov 24, 2025

LCM issue?

In my experience, the module under the headlight is to blame. I bought a new module for each headlight on Amazon for $25 ea and bought a cheap set of 6K D2 bulbs.

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May 09, 2026

Light Control Module replaced but problem persists

Recently I replaced a transistor on the LCM to fix the headlight stuck on issue. It sort of worked. I bought 4 more transistors to fix the flickering problem but never got that far. Lesson to

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Oct 17, 2025

How do I control the sensitivity range of an LDR-controlled LED?

I''m trying to make an LED dim according to the ambient light (darker ambient -> brighter LED), through use of an LDR. I''m using a voltage divider with an NPN transistor (BUL38D).

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Jun 05, 2026

Reduce the sensitivity of a PIR detector

The problem with reducing the range is that light/IR doesn''t really have a range - if you make it sensitive to small critter nearby it will also be sensitive to

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May 07, 2026

Light Control Module replaced but problem persists

SORRY to post a new thread, but I''m in a rush at work and DESPERATE for knowledge. Recently I replaced a transistor on the LCM to fix the headlight stuck on issue. It sort of worked. I

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Sep 11, 2025

Ford, Lincoln, Mercury Light Control Module (LCM) Problems, Issues

What is a LCM - Light Control Module? They are typically found in Ford Crown Victoria, Lincoln Town Car Limosines, Mercury Marauder and Mercury Grand Marquis and are prone to fail.

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Jul 15, 2025

Lighting Control Modules Explained: Features, Types,

Control modules enable lights to dim during downtime, switch on automatically in high-traffic areas, and enhance efficiency across large spaces.

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Jan 25, 2026

What Is A BMW Light Control Module (LCM)? | FCP Euro

The BMW light control module, commonly known as the LCM, lamp control module, or light check module, is an extremely common part that fails on

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May 27, 2026

Anyone Experienced Light Control Module Failure?

Lighting Control Module I have a 2004 745i with 74,000 miles and Im having a problem with the parking lights (Halo lights) staying on even when the lighting switch is in off position.

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Jan 28, 2026

How To Adjust Sensitivity Of Outdoor Light Sensor

By following these steps, the sensitivity of an outdoor light sensor can be adjusted to ensure optimal performance, conserve energy, and enhance the effectiveness of the lighting system.

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Dec 02, 2025

Light Magic: Using LM393 and Arduino UNO

Automatic light control using a photosensitive LDR sensor module and Arduino. Find this and other hardware projects on Hackster.io.

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Oct 12, 2025

Troubleshooting Light Control Module Problems in BMW

Explore common light control module issues in BMW E39, symptoms, diagnosis, and effective solutions for a smoother drive.

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Apr 07, 2026

HOW TO: Light/Lamp Control Module Replacement

HOW TO: Light/Lamp Control Module Replacement 1 reading Jump to Latest 28K views 18 replies 6 participants last post by Jaffi34 Jun 14, 2013

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Jul 10, 2025

Tuning In: A Comprehensive Guide to Adjusting the Sensitivity of Your

Typically, the sensitivity is adjusted by rotating a potentiometer or switching between different sensitivity settings. When adjusting the sensitivity, start with a low setting and gradually

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Jan 24, 2026

Troubleshooting BMW E46 Light Control Module Issues and Fixes

Explore common issues with the BMW E46 light control module, symptoms, causes, and effective solutions for repairs.

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Jan 06, 2026

How Do You Fix a Touch Lamp | 3 Effective Methods

By following these steps, you can effectively troubleshoot and repair your touch lamp, addressing common problems related to the power source,

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Aug 23, 2025

Light Control Module (LCM) Repair FAQs | Buford GA | My Auto

Find frequently asked questions about Light Control Module repair. My Auto Solutions in Buford, GA can repair and remanufacture your vehicle''s faulty LCM.

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Nov 17, 2025

What is a Lighting Control Module? Essential Guide Inside!

Discover how lighting control modules are revolutionizing the smart lighting industry, offering enhanced efficiency and customization. Learn how

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Dec 16, 2025

Contrast control too sensitive

If I turn the LCD trimpot INCREDIBLY slowly, I see the screen flash very briefly with the graticule and some numbers plus a DC indication, but I can''t get it to stick there - it always

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Aug 28, 2025

Troubleshooting PIR Sensor and sensitivity adjustment

This adjustment is needed if your PIR is too sensitive or not sensitive enough (clockwise turn makes it more sensitive). However, If there is no

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Apr 25, 2026

Arduino – Playing with a light sensitive resistor (LDR)

After building my own Ambient Light for my TV (Boblight project), several users asked how to control the light intensity of the LEDs based on the ambient light. So the LEDs should be brighter during the day,

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Dec 02, 2025

How To Fix A Touch Sensitive Lamp Fast

By following these steps, you can effectively troubleshoot and often fix your touch-sensitive lamp quickly, restoring your ambient lighting without the need for a costly replacement.

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Dec 08, 2025

How to use LDR Sensor Module with Arduino

It is widely used in various applications such as automatic lighting systems, security devices, and environmental monitoring. The LDR Sensor

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Mar 23, 2026

What Are the Symptoms of a Bad Body Control Module?

A failing Body Control Module (BCM) can cause chaos in your vehicle''s electrical system, triggering warning lights with no apparent cause.

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