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Body Control Module

2003 - 2008 BMW Z4 Immobilizer Control Module (OEM)

Only 1 left in stock
$69.95

ℹ️ Product Notes

This is a used part. This control unit manages your car's theft system (immobilizer). It controls the Electronic Immobilizer (EWS). IMPORTANT: This module must be programmed to your vehicle after installation.

This module must be programmed to your key and engine computer by a professional to start the car.
Condition: Excellent (A)
Like new, minimal to no wear
90,478 miles
Odometer reading when part was removed
SKU #
2162101-33435-195

Why Buy Used OEM Parts?

✓ Quality-Verified: Every used OEM part we sell has been professionally inspected and tested to ensure it meets our quality standards. While it may show some cosmetic wear from previous use, it's fully functional and ready to install.

✓ Original Equipment: This is a genuine OEM (Original Equipment Manufacturer) part - the exact same part that came with your vehicle from the factory. It's designed specifically for your make and model, ensuring perfect fitment and performance.

✓ Works Like New: Despite some visual wear, this part will perform just as well as a brand new one. The internal components and functionality are intact, giving you the same reliability you'd expect from OEM quality.

✓ Significant Savings: Save 50-80% compared to buying new! Used OEM parts offer exceptional value - you get factory quality at a fraction of the cost. It's the smart choice for budget-conscious vehicle owners who won't compromise on quality.

✓ Risk-Free Purchase: We stand behind our used parts with a generous 6-month warranty, 30-day returns, and 100% money-back guarantee. If it doesn't work out for any reason, simply return it for a full refund. You have nothing to lose!

🛡️ 30-Day Returns + 6-Month Warranty - Buy with Confidence!

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Vehicle Fitment Guide

This part fits the following vehicles:

BMW
Z4 2003-2008 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
2.5i Convertible 2003 - 2006 L6 2.5L RWD | Automatic & Manual
3.0i Convertible 2003 - 2006 L6 3.0L RWD | Automatic & Manual
Coupe 3.0si Coupe 2006 - 2008 L6 3.0L RWD | Automatic & Manual
M Coupe Coupe 2006 - 2008 L6 3.2L RWD | Manual
M Roadster Convertible 2006 - 2008 L6 3.2L RWD | Manual
Roadster 3.0i Convertible 2006 - 2008 L6 3.0L RWD | Automatic & Manual
Roadster 3.0si Convertible 2006 - 2008 L6 3.0L RWD | Automatic & Manual
2.5si Convertible 2007 - 2008 L6 2.5L RWD | Automatic & Manual
3.0si Convertible 2007 - 2008 L6 3.0L RWD | Automatic & Manual
2004 - 2005

⚠️ Important: Please verify your vehicle's year, make, model, and specifications before ordering. If you're unsure about fitment, contact our customer service team for assistance.

Policies

Shipping & Handling

  • Standard shipping: 3-7 business days via UPS Ground
  • Parts are carefully packaged to prevent damage during transit

Returns (30 Days)

We accept returns within 30 days of delivery for this part.

  • Defective parts: We will replace the part or issue a refund at our discretion
  • Electronic parts: Must be returned with the sealed inspection bag unopened. The clear bag allows full visual inspection before opening. Once opened, electronic parts can only be exchanged for a replacement if defective — no refunds
  • Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
  • Return shipping: We cover return shipping as part of our 100% money-back guarantee
  • Parts must be returned in original packaging and unmodified condition
  • Poorly packaged returns that arrive damaged will not be credited

6-Month Warranty

All used parts include a 6-month warranty from the date of purchase.

  • If your part fails within 6 months, we will send a replacement
  • Refunds are only issued if we cannot provide a suitable replacement
  • Warranty covers defects — not installation errors, misuse, or damage after installation

Note: Warranty is for replacement, not refund. A part failing on day 80? We'll replace it. But the return window for refunds is 30 days.

Damaged in Shipping?

If your part arrives damaged:

  • Stop immediately — do not install the part
  • Keep all original packaging and boxes
  • Take clear photos of the damage and packaging
  • Contact us within 48 hours of delivery

We will handle the carrier claim. You are not responsible for shipping damage — we just need your help documenting it.

Order Cancellation

Orders can be cancelled before shipment for a full refund. Once shipped, cancellations follow our return policy.

Symptoms & Diagnosis

Warning Signs Your Immobilizer Control Module is Failing:

  • Your BMW won't start, even though the battery is good.
  • The security light stays on or flashes constantly.
  • The car starts, but then stalls shortly after.
  • You experience intermittent starting problems.
  • The key is not recognized by the car.

How to Test if This Part is the Problem:

  1. Check the battery: Make sure your car battery is fully charged. A weak battery can cause immobilizer issues.
  2. Inspect the key: Try using a different key. If the other key works, the original key might be the problem.
  3. Scan for error codes: Use an OBD-II scanner to check for immobilizer-related trouble codes.
  4. Check the wiring: Inspect the wiring harness and connectors for any damage or corrosion.
  5. Consult a professional: If you've tried these steps and the problem persists, it's best to have a qualified mechanic diagnose the issue. They can use specialized tools to test the immobilizer system.

Common Failure Causes:

  • Electrical surges: Power surges can damage the sensitive electronic components inside the module.
  • Water damage: Moisture can corrode the internal circuits, leading to failure.
  • Vibration: Constant vibration can loosen connections and cause components to fail over time.
  • Age: Like any electronic component, immobilizer control modules can simply wear out over time.
  • Faulty wiring: Damaged or corroded wiring can cause the module to malfunction.

Buyer's Checklist

What to Look For When Buying This Part:

  • Compatibility: Ensure the part is specifically designed for your BMW X3 or X5 model year (2004-2010).
  • Condition: Decide whether you want a used OEM or a new aftermarket part.
  • Warranty: Check if the part comes with a warranty. A warranty can protect you against defects.
  • Seller Reputation: Buy from a reputable seller with good reviews.

Quality Indicators:

FeatureUsed OEMNew Aftermarket
OriginGenuine BMW partThird-party manufacturer
TestingTypically tested and inspectedNew, but may have varying quality control
ReliabilityKnown reliability of original equipmentReliability can vary by brand
PriceGenerally more affordableCan be comparable or slightly higher

What's Typically Included:

  • The immobilizer control module itself.
  • Sometimes, basic installation instructions (though professional installation is often recommended).
  • No additional hardware (like screws or brackets) is usually included.

Installation Overview

Difficulty Level and Estimated Time:

  • Difficulty: Medium to High. This is not a beginner-level job.
  • Estimated Time: 1-3 hours, depending on your experience and the specific vehicle.

Special Tools Needed:

  • Basic hand tools (sockets, wrenches, screwdrivers)
  • OBD-II scanner
  • Security Torx bits (may be required to remove the old module)
  • Programming equipment (may be required to program the new module to your car)

Critical Steps and Tips:

  1. Disconnect the battery: Always disconnect the negative battery terminal before working on electrical components.
  2. Locate the module: The immobilizer control module is usually located under the dashboard or in the center console. Consult your car's repair manual for the exact location.
  3. Remove the old module: Carefully disconnect the wiring harness and remove the old module.
  4. Install the new module: Connect the wiring harness to the new module and install it in the same location as the old one.
  5. Reconnect the battery: Reconnect the negative battery terminal.
  6. Program the module: This is the most critical step. The new module may need to be programmed to your car's security system. This often requires specialized equipment.

DIY or Professional Installation:

  • Professional Installation is Recommended: Due to the programming requirements, professional installation is highly recommended. Incorrect programming can render your car inoperable.

Buying Options

Compare: Used OEM, New Aftermarket

| Feature | Used OEM say:

Used OEM: Best value – genuine factory parts, tested and inspected, at significantly lower prices. Provides original equipment performance and reliability.

New Aftermarket: Brand new third-party parts built to OE specs. Offers a new part at a competitive price.

Typical Lifespan

  • The immobilizer control module typically lasts for 10-15 years or more.

Factors That Affect Longevity:

  • Climate: Extreme temperatures and humidity can shorten the lifespan of electronic components.
  • Driving conditions: Harsh driving conditions can put extra strain on the electrical system.
  • Maintenance: Regular maintenance, such as checking the battery and electrical connections, can help extend the lifespan of the immobilizer control module.
  • Electrical surges: Electrical surges can damage the module.

Price Ranges

  • Used OEM: $50 - $150
  • New Aftermarket: $80 - $250
  • Labor Cost: $100 - $300 (depending on the shop and the complexity of the installation)
  • Total Job Cost Estimate: $150 - $550

Vehicle-Specific Notes

  • Some 2004-2010 BMW X3 and X5 models have been known to experience issues with the immobilizer system due to faulty wiring or corrosion in the connectors.
  • Check for any Technical Service Bulletins (TSBs) related to the immobilizer system on your specific model year. Some TSBs may offer guidance on diagnosing and repairing common problems.
  • Some owners have reported issues with the key not being recognized by the car, even after replacing the immobilizer control module. This can sometimes be resolved by reprogramming the key to the car.

Verification After Install

How to Confirm Proper Operation:

  • Start the car: The car should start normally without any hesitation.
  • Check the security light: The security light should turn off after the car starts.
  • Test the key fob: Make sure the key fob functions properly (locking, unlocking, panic button).
  • Scan for error codes: Use an OBD-II scanner to check for any new trouble codes.

What to Look/Listen For:

  • The engine should run smoothly without any misfires or stalling.
  • There should be no warning lights illuminated on the dashboard.
  • The car should respond normally to the key fob.

FAQ

Q: Will this immobilizer control module need to be programmed to my car?
A: Yes, most likely. The new module will need to be programmed to your car's security system for it to function correctly. This usually requires specialized equipment and software.

Q: Can I install this part myself?
A: While it is possible to install the part yourself, professional installation is highly recommended due to the programming requirements.

Q: What happens if I don't program the module correctly?
A: If the module is not programmed correctly, your car may not start, or the security system may not function properly.

Q: How do I find a mechanic who can program this part?
A: Look for a mechanic who specializes in BMWs or European cars. They will typically have the necessary equipment and expertise to program the immobilizer control module.

Q: What is the difference between a used OEM and a new aftermarket immobilizer control module?
A: A used OEM module is a genuine BMW part that has been previously used but is typically tested and inspected. A new aftermarket module is a brand new part made by a third-party manufacturer.

Part Specifications

OEM Part Numbers:

  • BMW: 61354100187, 61356905666, 61356905670, 61356934529, 61356937791, 613569377919, 61356941986, 6937791

Fits Years: 2003 2004 2005 2006 2007 2008

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