2003 - 2016 BMW Z4 Suspension Height Sensor (OEM)

What to look for when buying this part:

• Make sure the part is specifically designed for your car's year, make, and model.
• Check the part's connector and mounting points to ensure they match your car's existing sensor.
• Read reviews from other buyers to get an idea of the part's quality and reliability.
• Consider the warranty offered by the seller.

Quality indicators for the available options:

What's typically included with the part:

• The suspension height sensor itself.
• Sometimes, mounting hardware (screws, bolts, etc.).
• Instructions may or may not be included.

Difficulty level and estimated time:

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

Special tools needed (if any):

• Socket set
• Wrench set
• Multimeter (for testing)
• Scan tool (for clearing codes)
• Jack and jack stands

Critical steps and tips:

1. Disconnect the negative battery cable before starting.
2. Safely lift and support the vehicle with jack stands.
3. Locate the suspension height sensor on the suspension system.
4. Disconnect the electrical connector from the sensor.
5. Remove the mounting hardware and carefully remove the old sensor.
6. Install the new sensor, making sure it's properly aligned.
7. Reconnect the electrical connector.
8. Lower the vehicle and reconnect the negative battery cable.
9. Use a scan tool to clear any error codes.

Whether DIY is recommended or professional installation is better:

• DIY is possible for mechanically inclined individuals. However, professional installation is recommended if you're not comfortable working on your car's suspension system or using diagnostic tools.

Compare: Used OEM, New Aftermarket

Used OEM: Best value - genuine factory parts, tested and inspected, at significantly lower prices.

New Aftermarket: Brand new third-party parts built to OE specs.

Parts commonly replaced or checked at the same time:

• Air suspension compressor
• Air struts or shocks
• Air lines
• Suspension control module

Why replacing related parts prevents repeat failures:

• If the air suspension compressor is weak, it can put extra strain on the height sensor, causing it to fail prematurely. Leaks in the air lines or struts can also cause the sensor to work harder to maintain the correct ride height. Replacing these parts at the same time can help ensure the entire system is working properly and prevent future problems.

How long this part normally lasts:

• A suspension height sensor typically lasts 75,000 to 100,000 miles.

Factors that affect longevity:

• Driving conditions (rough roads, exposure to salt and debris)
• Quality of the part
• Proper maintenance of the suspension system
• Climate

Budget vs mid-range vs premium options:

• Used OEM: $50 - $150
• New Aftermarket: $75 - $300

Labor cost considerations if applicable:

• Labor costs can range from $150 to $300, depending on the shop's hourly rate and the complexity of the job.

Total job cost estimates:

• DIY (Used OEM): $50 - $150 (part only)
• DIY (New Aftermarket): $75 - $300 (part only)
• Professional Installation (Used OEM): $200 - $450 (part + labor)
• Professional Installation (New Aftermarket): $225 - $600 (part + labor)

Known issues for this vehicle's system related to this part:

• Some models have been known to experience issues with the wiring harness connecting to the height sensor. Check for corrosion or damage to the connector.
• Water intrusion into the sensor is a common problem on certain models.

Any TSBs or common complaints:

• Check with your local dealer or online resources for any Technical Service Bulletins (TSBs) related to the suspension height sensor on your specific vehicle.

How to confirm proper operation:

• Start the engine and let the car idle for a few minutes.
• Observe the ride height of the vehicle. It should be level and consistent on all four corners.
• Drive the car over some bumps and uneven surfaces. The suspension should absorb the bumps smoothly and the ride height should remain stable.
• Use a scan tool to check for any new error codes related to the suspension system.

What to look/listen for to verify it's working correctly:

• The air suspension compressor should not be running constantly.
• There should be no unusual noises coming from the suspension system.
• The ride should be comfortable and controlled.

Q: How do I know if it's the front or rear sensor that's bad?
A: A scan tool can usually pinpoint which sensor is reporting incorrect data. You can also visually inspect each sensor for damage and compare their readings with a multimeter.

Q: Can I drive my car with a bad suspension height sensor?
A: It's not recommended. A faulty sensor can cause the suspension to malfunction, leading to a rough ride, poor handling, and potential damage to other suspension components.

Q: Do I need to calibrate the suspension after replacing the height sensor?
A: Yes, calibration is often required after replacing a suspension height sensor to ensure the system is properly aligned and functioning correctly. A scan tool is usually needed for this procedure.

Q: Will a new sensor fix my suspension warning light?
A: If the suspension warning light is caused by a faulty height sensor, then replacing the sensor should resolve the issue. However, it's important to diagnose the problem correctly before replacing any parts.

Q: How often should I replace my suspension height sensors?
A: There's no set replacement interval for suspension height sensors. They should be replaced when they fail or show signs of malfunction. Regular inspection of the suspension system can help identify potential problems early on.

OEM Part Numbers:

• BMW: 25916010, 37146784072, 37146788569, 3714678856902, 37146788571, 37146860843

Fits Years: 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016