Go-To Garage In West Chester For Replacing BMW’s Ignition Module

The ignition module is a crucial component of the ignition system in BMW vehicles, controlling the ignition coils, the spark generated by them, and their timing. It functions as a master switch for the ignition coil.

The combustion of fuel generates the energy that runs your BMW. The ignition of the combustion stems from a spark of the ignition coil. Assessing the signals from the camshaft position sensor, the ignition module kick-starts the process that ends in the creation of the spark. This process occurs hundreds of times per minute inside the engine.

Cause and Symptoms of Ignition Module Damage

Common Causes of Ignition Module Failure

The malfunctions in the ignition module often stem from external factors rather than internal defects. Common among them are;

• Heat is one of the most common causes of ignition module malfunction. The module is situated in the engine bay, which exposes it to constant heat from the engine. Over the years, degrading the module could cause malfunctions.
• Similarly, the vibrations from the engine also affect the ignition module. Over the years, the connection between the module and the ignition coil gets weakened and eventually breaks. This causes the spark to fail in generation. Additionally, if the engine’s vibration increases due to other factors, it may also dislodge or break the connection between the ignition coil and module.
• The ignition module contains several sensitive and low-tolerance electronics that receive sensor signals and initiate the sparking process. A voltage surge caused by a faulty alternator could damage these components, resulting in the malfunction of the ignition module.
• If, due to leaks and cracks in any of the engine seals, water or moisture enters the engine bay, it could reach the ignition module and cause a short circuit in the module. This causes permanent damage to the module.
• Sometimes, the failure in the ignition module is due to simple wear and tear after years of operation, creating millions of sparks.

Common Signs of Ignition Module Damage

Damage in the ignition module affects the generation of the ignition spark, which in turn affects the engine. Engine misfires, where the engine hesitates or runs rough under acceleration, are the primary signs of ignition module damage. A malfunctioned ignition module creates inconsistent sparks for combustion. This, in turn, results in erratic fluctuations in engine RPM and causes sudden slowdowns and speed-ups in the vehicle.

In extreme conditions, the engine may not start at all, as there is no spark to ignite the initial ignition. Apart from that, engine stalling, poor fuel economy, and the check engine light are some of the other signs of ignition module damage.

Replacement of a Damaged Ignition Module in a BMW

Similar to any repairs, the ignition module damage repair also includes the first step of diagnostic inspection. There are several simple steps used to isolate and identify the damage, all while eliminating other suspected component damages. These processes are;

• Using a diagnostic scanner, the vehicle’s OBD is read, and error codes related to ignition coil control are identified.
• The spark condition is checked using the spark tester tool, which joins the spark plug and the coil wire and visually confirms if a spark is being generated or not.
• Inspection of other components is performed, for example, by testing spark plugs and verifying the ignition coils for proper resistance, as well as checking the wiring for any visible damage or corrosion.
• After properly isolating and identifying the damage, the technicians removed the module from its mount. The damaged one is disposed of, and the new one is prepared to be installed. A dielectric thermal pad is applied behind the module before attaching it to the mount for proper heat transfer. After the replacement, the battery terminals are connected, and the control unit is reset for optimal functionality.

The Go-To Garage for BMW’s Ignition Module Replacement in West Chester

If you notice signs of ignition module failure in your Audi near West Chester, visit our auto repair shop, Dougherty Automotive Services, for quality repair and replacement of the ignition module in your vehicle.

Established in 1977, we have been working on European automobiles for more than 48 years. We house five highly experienced auto technicians with a collective experience of 125 years, who are experts in European automobiles, including BMW.

We are one of the 1,500 Bosch Authorized Service Centers in the entire USA. We house cutting-edge diagnostic and repair tools. We are also a GICA-authorized dealer, holding the exclusive license to perform software tune-ups in the West Chester area.