Top 5 Common Faults in the Bmw E90 and How to Fix Them

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The BMW E90, part of the 3 Series produced from 2006 to 2013, is known for its performance and luxury. However, like any vehicle, it has its share of common faults. In this article, we will explore the top five common faults in the BMW E90 and provide solutions to fix them.

1. Oil Leaks

Oil leaks are a prevalent issue in the BMW E90, often caused by worn gaskets or seals. These leaks can lead to low oil levels and potential engine damage if not addressed promptly.

  • Diagnosis: Look for oil spots under the vehicle or a burning oil smell.
  • Fix: Replace the affected gaskets or seals, such as the valve cover gasket or oil pan gasket.

2. Cooling System Failures

The cooling system in the BMW E90 can fail due to a faulty water pump, thermostat, or radiator. Overheating can cause severe engine damage, making this an urgent issue to resolve.

  • Diagnosis: Monitor the temperature gauge and check for coolant leaks.
  • Fix: Replace the water pump, thermostat, or radiator as needed. Regularly check coolant levels and replace old coolant.

3. Electrical Issues

Electrical problems can manifest in various ways, from malfunctioning windows to issues with the central locking system. These problems may stem from faulty wiring or a failing battery.

  • Diagnosis: Test all electrical components and check for blown fuses.
  • Fix: Inspect wiring for damage, replace blown fuses, and ensure the battery is charged and functioning properly.

4. Transmission Issues

Some BMW E90 models experience transmission problems, such as rough shifting or slipping. These issues can be attributed to low transmission fluid or a failing transmission control module.

  • Diagnosis: Pay attention to the transmission’s behavior during shifting.
  • Fix: Check and top up transmission fluid. If problems persist, consider reprogramming or replacing the transmission control module.

5. Suspension Wear

The suspension system in the BMW E90 can wear out over time, leading to a rough ride and poor handling. Common signs include clunking noises and uneven tire wear.

  • Diagnosis: Inspect the suspension components for wear and listen for unusual noises while driving.
  • Fix: Replace worn suspension parts, such as struts, shocks, or control arms, to restore ride quality.

In conclusion, while the BMW E90 is a superb vehicle, it is essential to be aware of these common faults. Regular maintenance and prompt repairs can help ensure your BMW E90 remains in excellent condition for years to come.