2003 - 2008 BMW Z4 Theft Control Module (OEM)

When buying a replacement Theft Control Module, look for these things:

• Make sure the module is compatible with your car's year, make, and model.
• Check the module's condition if buying a used part.
• Ask about any warranty or return policy.

Quality indicators to consider:

• For used parts, look for modules that have been tested and inspected.
• For aftermarket parts, choose reputable brands.

Typically, you'll receive just the Theft Control Module itself. You may need to reuse existing hardware for installation.

Replacing the Theft Control Module is generally considered a medium-difficulty job.

• Difficulty level: Medium
• Estimated time: 1-2 hours

Special tools you might need:

• Basic hand tools (sockets, wrenches, screwdrivers).
• A code scanner to clear any error codes after installation.

Critical steps and tips:

1. Disconnect the car's battery before starting.
2. Locate the Theft Control Module (usually under the dashboard or in the center console).
3. Disconnect the wiring harness from the old module.
4. Connect the wiring harness to the new module.
5. Reconnect the car's battery.
6. Use a code scanner to clear any error codes.

Whether DIY is recommended or professional installation is better:

• If you have experience with car electronics, you might be able to do it yourself. However, professional installation is recommended to ensure proper programming and avoid damaging the car's electrical system.

Let's compare your options: Used OEM and New Aftermarket.

Used OEM: These are genuine factory parts that have been removed from other vehicles. They are tested and inspected to ensure they are working properly. They offer excellent value because they are significantly cheaper than new parts.

New Aftermarket: These are brand new parts made by third-party manufacturers. They are designed to meet the original equipment specifications.

Parts that are commonly replaced or checked at the same time as the Theft Control Module include:

• The car battery: A weak battery can cause problems with the security system.
• The key fob: If the key fob is not working properly, it can prevent the car from starting.
• The wiring harness: Damaged wiring can cause the Theft Control Module to fail.

Replacing related parts can help prevent repeat failures because it addresses the underlying issues that may have caused the original module to fail. For example, replacing a corroded wiring harness will prevent the new module from being damaged by the same corrosion.

A Theft Control Module typically lasts 8-12 years.

Factors that affect longevity:

• Exposure to moisture or extreme temperatures.
• Electrical surges or shorts.
• The overall condition of the car's electrical system.

Here are typical price ranges for Theft Control Modules:

• Budget: $50 - $150 (Used OEM)
• Mid-Range: $150 - $300 (New Aftermarket)
• Premium: $300+ (High-quality Aftermarket)

Labor costs for installation can range from $100 to $300, depending on the mechanic's hourly rate and the complexity of the job.

Total job cost estimates:

• DIY (Used OEM): $50 - $150
• Professional Installation (Used OEM): $150 - $450
• Professional Installation (New Aftermarket): $250 - $600+

Some BMW and Rolls-Royce models have known issues with the security system, such as:

• Problems with the key fob losing its programming.
• Issues with the car's immobilizer system.
• Random alarm activations.

Check for any Technical Service Bulletins (TSBs) related to the security system on your specific vehicle model. These bulletins provide information about common problems and how to fix them.

After installing the new Theft Control Module, verify proper operation by:

• Starting the car to ensure it starts normally.
• Testing the remote key fob to lock and unlock the doors.
• Making sure the car alarm does not go off randomly.
• Checking the dashboard for any security warning lights.

Listen for any unusual noises or other signs of trouble. If everything seems to be working correctly, the installation was successful.

Q: Will this Theft Control Module need to be programmed to my car? A: Yes, in most cases, the Theft Control Module will need to be programmed to your car's specific VIN. This is usually done by a mechanic using a special diagnostic tool.

Q: What happens if I install the module myself and it doesn't work? A: If the module doesn't work after installation, it could be due to a number of reasons, such as incorrect installation, a faulty module, or the need for programming. It's best to consult with a mechanic to diagnose the problem.

Q: How can I tell if the Theft Control Module is the only problem? A: A mechanic can use a diagnostic tool to scan the car's computer for error codes related to the security system. This can help determine if the Theft Control Module is the only problem or if there are other issues that need to be addressed.

Q: Is it okay to buy a used Theft Control Module? A: Yes, buying a used OEM Theft Control Module can be a good way to save money. Just make sure to buy from a reputable source and check the module's condition before purchasing.

Q: What if the part number doesn't exactly match the one on my old module? A: While matching part numbers is ideal, sometimes superseded or interchangeable part numbers exist. Consult with a mechanic or parts specialist to confirm compatibility with your vehicle's year, make, and model.

OEM Part Numbers:

• BMW: 65756920573, 65756922413, 65756924278, 65756926048, 65756929701, 65756940763, 65756946202, 65756974372

Fits Years: 2003 2004 2005 2006 2007 2008