2003 - 2008 BMW Z4 Suspension and TPMS Control Module (OEM)

What to Look For When Buying

• Condition: If buying used, check for any signs of physical damage or corrosion.
• Warranty: Look for a warranty to protect against defects.
• Return Policy: Make sure you can return the part if it doesn't solve your problem.

Quality Indicators

• OEM Markings: For used OEM parts, look for the original manufacturer's markings.
• Testing and Inspection: Ensure the part has been tested and inspected to meet quality standards.

What's Typically Included

• The control module itself.
• Sometimes, installation instructions (especially for new aftermarket parts).

Difficulty Level and Estimated Time

• Difficulty: Medium
• Estimated Time: 1-2 hours

Special Tools Needed

• OBD-II scanner
• Socket set
• Screwdrivers
• Multimeter (optional, for testing)

Critical Steps and Tips

1. Disconnect the battery: Always disconnect the negative battery terminal before working on electrical components.
2. Locate the module: The control module is typically located in the trunk or under a seat. Consult your vehicle's repair manual for the exact location.
3. Disconnect connectors: Carefully disconnect the electrical connectors from the module.
4. Remove the old module: Unbolt or unclip the old module from its mounting bracket.
5. Install the new module: Install the new module in the reverse order of removal.
6. Reconnect the battery: Reconnect the negative battery terminal.
7. Clear error codes: Use an OBD-II scanner to clear any error codes.
8. Recalibrate (if needed): Some systems may require recalibration after replacing the control module.

DIY or Professional Installation?

• DIY is possible if you have experience working on cars and are comfortable with electrical systems.
• Professional installation is recommended if you are not comfortable with the above steps or if recalibration is required.

Compare: Used OEM, New Aftermarket

| Feature | Used OEM | New Aftermarket and quality. | | Used OEM | Best value. Genuine factory parts, tested and inspected, at significantly lower prices. Used OEM: Best Value

• Genuine factory parts, tested and inspected.
• Significantly lower prices than new.

New Aftermarket: Brand New

• Brand new parts built to OE specs.
• May offer a longer warranty than used.

• Wheel speed sensors
• ABS control module
• Air suspension compressor
• Air struts or shocks
• Ride height sensors

Replacing these parts at the same time can prevent repeat failures. For example, a failing air suspension compressor can overload the control module, causing it to fail prematurely. Similarly, faulty wheel speed sensors can send incorrect data to the control module, leading to suspension and TPMS problems.

• The suspension and TPMS control module typically lasts 7-10 years or 100,000-150,000 miles.

Factors Affecting Longevity

• Driving conditions: Harsh driving conditions, such as rough roads or extreme temperatures, can shorten the lifespan of the module.
• Maintenance: Proper maintenance, such as regular inspections and addressing suspension or TPMS problems promptly, can help extend the lifespan of the module.
• Quality of replacement parts: Using high-quality replacement parts can help ensure the new module lasts as long as possible.

• Budget: $100 - $200
• Mid-Range: $200 - $350
• Premium: $350 - $500+

Labor costs can range from $100 to $300, depending on the shop and the complexity of the installation.

Total job cost estimates:

• Budget: $200 - $500
• Mid-Range: $300 - $650
• Premium: $450 - $800+

• Some 2006-2008 BMW Z4 models have been known to experience issues with the TPMS system due to faulty sensors or control modules.
• Check for any Technical Service Bulletins (TSBs) related to the suspension or TPMS system on your vehicle.
• Some owners have reported that aftermarket TPMS sensors may not be fully compatible with the factory control module.

How to Confirm Proper Operation

• Check for any warning lights on the dashboard. The TPMS light should be off after driving for a few minutes.
• Test the suspension by driving over bumps and uneven surfaces. The ride should be smooth and controlled.
• Use a TPMS tool to check the tire pressure readings. The readings should be accurate and consistent.

What to Look/Listen For

• No warning lights on the dashboard.
• Smooth and controlled ride.
• Accurate tire pressure readings.
• No unusual noises from the suspension.

Q: How do I know if my suspension and TPMS control module is bad?

A: Common signs include a TPMS light that stays on, suspension problems like a rough ride, and error messages on your dashboard.

Q: Can I replace the suspension and TPMS control module myself?

A: Yes, if you have some experience working on cars. However, professional installation is recommended if you're not comfortable with electrical work or if recalibration is needed.

Q: Will a used OEM control module work as well as a new one?

A: Yes, used OEM modules are genuine factory parts that have been tested and inspected. They can offer the same performance as new parts at a lower price.

Q: Do I need to program the new control module?

A: Some systems may require programming or recalibration after replacing the control module. Check your vehicle's repair manual or consult a professional.

Q: What happens if I don't replace a faulty control module?

A: Ignoring a faulty control module can lead to suspension problems, inaccurate tire pressure readings, and potential safety issues.

OEM Part Numbers:

• BMW: 36236778390, 36236782803, 6778390, 677839001, 6782803

Fits Years: 2003 2004 2005 2006 2007 2008