BMW is one of the top vehicle brands that produces excellent engine performance. However, have you ever wondered how it does so? For a car’s engine to run smoothly, it needs various systems such as the ignition system that enables the engine to generate its power for efficient running.
The ignition module is an essential part of the ignition system, and it plays a vital role. Once this module is damaged for any reason, you have to find a replacement to avoid engine complications and failure. In this guide, we will explain the common signs to help you know that it is time for an ignition module replacement in your car.
The Role of the Ignition Module
As explained earlier, the ignition module is a vital part of the ignition system. Each component of the ignition system has a role to play in producing the voltage needed to fire up the spark plugs for engine combustion.
However, the spark plugs have to fire at the right time (ignition timing) to ensure complete combustion of the air-fuel mixture. This is where the Ignition Control Module (ICM) comes into play. The ICM gathers information from the camshaft and crankshaft position sensors when the timing is right. Then, it switches the ignition coil on or off at the right time to ignite the spark plugs for combustion.
Without the ignition module, the spark plugs do not get ignited at the right time, which leads to incomplete combustion and various engine problems. This can happen for various reasons such as excessive engine heat, electrical problems, and wear and tear.
Common Symptoms of a Failing Ignition Module in Your BMW
If the ignition module in your BMW keeps failing, then it is time to get a replacement before it does real damage to other components of the ignition system or the engine. Here are some signs of failure to help you know it is time for an ICM replacement.
1. Engine Problems
One of the major signs to tell you that your BMW’s ignition module is faulty is when you start to notice engine problems such as engine misfires or stalling. This typically indicates that the spark plugs do not ignite the air-fuel mixture properly for combustion; hence, the engine does not receive enough power to run efficiently. While this could be caused by various factors, one of the leading culprits is a bad ignition control module.
2. “Check Engine” Light Illuminates
Another common sign to show a damaged ignition module in a car is the “check engine” light. This light comes on your dashboard the moment your engine starts experiencing some issues, no matter how little. This light can come on for various reasons from the lack of coolant to a faulty ignition system. You may need an OBD scanner to determine the exact cause of the issue.
3. Difficulty Starting the Car
If you notice that your car takes longer than usual to kick off, then something is wrong with the ignition system. A damaged ignition module can disrupt the normal ignition process in the engine, leading to a difficulty in getting the engine and thus, the vehicle, to start.
Some other signs of ignition module failures are:
- Reduced fuel economy
- Loss of power or poor acceleration
- Recurring spark plug failures
Other faults in the ignition system can produce the same effects on the engine as a damaged ignition module. Once you notice any of the signs above in your car, you should use the right diagnostic tools to find the source of the problem. If you do not have tools, you need to find a professional to help.
The Top Automobile Care Center in California for BMW Ignition Module Replacement
At Bavarium Autoworks, we offer 
premium maintenance and repair services to specific European car brands. Our specificity makes it possible to deliver the best as our technicians are certified and experienced in brand-specific care. Would you rather have a technician who specializes in BMW repairs to fix your BMW or a general repair mechanic? If you are in Cupertino, Palo Alto, San Jose, Santa Clara, Saratoga, or Mountain View, CA, and you want the best for your BMW, make an appointment with our BMW experts.