Home > Troubleshooting > Electrical Problems

Electrical Problems

Mercedes EZS EIS Ignition Switch Problem, Cause, Solution

mercedes benz cla interior to start

A problem that Mercedes-Benz owners may face is the key no longer turns in the ignition. This issue is often caused either by a defective key, bad shifter module, a failed Electronic Ignition Switch (EIS) also known as the EIS-EZS or a bad steering lock module (ESL). This problem can …

Read More »

Mercedes turn signal not working

clean turn signal bulb contact

In this article, we go over the most common Mercedes turn signal problems and how to diagnose such problems yourself. If your left or right turn signals (side mirror, headlight or tail light) have stopped working, the problem may be caused by any of the following: faulty SAM module, combination switch, blown …

Read More »

Mercedes Key Fob Not Working

mercedes key fob

Mercedes-Benz key fob not working? The first thing you need to do is change the keyless remote battery. We assume you have already done that part by now. Is your Mercedes key fob not working after a battery change? This article will help you troubleshoot problems where the Mercedes key …

Read More »

Mysterious Battery Drain

mercedes benz battery drain problem

Battery Drain Does your Mercedes-Benz battery slowly drain? Battery is dead every morning? Does the Mercedes-Benz battery die when you have the car parked overnight or leave it parked for a few days? This step by step guide will explain  how to troubleshoot this problem, the basics of battery drain …

Read More »

Brake Light Switch Problems and Solution

Rotate brake light switch to the right to remove it

Mercedes-Benz Brake Light Switch Problems Learn how easy it is to change the brake light switch on your Mercedes Benz. Brake light switch issues with Mercedes-Benz cars are the #1 problem that most owners face. Defective brake light switch can cause the lights not to turn on, therefore causing accidents and …

Read More »

BATTERY/ALTERNATOR VISIT WORKSHOP DIY

Typically you get BATTERY/ALTERNATOR VISIT WORKSHOP warning when the electrical system voltage in the car is below 12.6 volt. When the car is running the alternator produces electricity and the voltage should be above 13.5 volt. If you have a multimeter like this one, you can connect it to the battery terminals …

Read More »