Welcome to 603 Auto Salvage, We Sell Quality Used Auto Parts at Affordable prices.
Welcome to 603 Auto Salvage, We Sell Quality Used Auto Parts at Affordable prices.
$75.00
Used OEM chassis brain box (telematics control unit) from a 2015 BMW 335. This communication module has been inspected and is ready to ship. Stock #12535ICOM, Interchange #56484.
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This used OEM chassis brain box is a telematics control unit pulled from a 2015 BMW 335. The part carries ID number 84109257153 and has been professionally inspected by our technicians. This communication module is currently on our shelf and ready for immediate shipment to get your BMW’s telematics system functioning properly again.
The chassis brain box serves as the central communication hub for your BMW’s telematics system, managing phone connectivity, emergency services, and remote vehicle functions. These units commonly fail due to software corruption, water damage, or internal component degradation over time. When this module fails, you may experience issues with hands-free calling, BMW Assist services, or remote vehicle access features.
At 603 Auto Salvage, we maintain an inventory of over 50,000 used auto parts from more than 1,100 vehicles. Our experienced team ensures each part meets our quality standards before it reaches our shelves. Contact us to verify compatibility with your specific BMW model or browse our extensive online catalog to find the parts you need. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
| Part | Chassis Brain Box – Telematics Control Unit |
| Interchange # | 56484 |
| OEM Part Number | 84109257153 |
| Side | N/A |
| Part Grade | X — Grade X – Inspected and ready to ship, ID 84109257153 |
| Warranty | 90-Day Warranty (Standard warranty for electronic control modules) |
| Type | Used OEM |
| Year / Make / Model | 2015 BAVARIAN MOTOR WORKS (BMW) BMW335 |
| VIN | N/A |
| Vehicle Stock # | 12535ICOM |
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Chassis Brain Box – Telematics Control Unit:
| ✅ Physical Housing | Inspected for cracks, water damage, and mounting integrity |
| ✅ Connector Pins | Verified all electrical connections are clean and undamaged |
| ✅ Internal Components | Checked for signs of overheating or component failure |
| ✅ Part Number Verification | Confirmed OEM part number 84109257153 matches application |
| ✅ Mounting Hardware | Inspected bracket and securing points for proper fitment |
Based on interchange #56484, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2012-2015 | BMW | 335i | F30 chassis with telematics package |
| 2012-2015 | BMW | 335i xDrive | F30 chassis with telematics package |
| 2014-2015 | BMW | 335i Gran Turismo | F34 chassis with telematics package |
| 2012-2015 | BMW | 328i | F30 chassis – verify telematics option |
| 2012-2015 | BMW | 320i | F30 chassis – verify telematics option |
Questions? Need a shipping quote? Call us now:
603 Auto Salvage | 233 Main St, Plaistow, NH 03865
Mon–Fri 8am–4:30pm | Sat 8am–2pm | Sun Closed
The chassis brain box is BMW’s telematics control unit that manages communication features like hands-free calling, BMW Assist emergency services, and remote vehicle functions. It serves as the central hub for your vehicle’s connectivity features.
Common symptoms include non-functioning hands-free phone system, inability to connect to BMW Assist services, loss of remote vehicle access features, or error messages related to communication systems on your dashboard.
Yes, BMW telematics control units typically require programming and coding to match your specific vehicle’s configuration. This should be performed by a qualified BMW technician or shop with BMW diagnostic equipment.
Fitment depends on your vehicle having the telematics package option. The part number 84109257153 is specific to certain configurations, so verify your current unit’s part number or contact us for compatibility confirmation.
These units commonly fail due to software corruption, moisture intrusion, power supply issues, or internal component degradation over time. Age and heat cycles in the vehicle environment contribute to electronic component failure.
While the physical installation involves removing interior panels and disconnecting electrical connectors, the unit requires professional programming and coding after installation. DIY installation is possible but professional setup is recommended for proper operation.
Looking for this part by number? Here are the reference numbers:
| BMW Part Number | 84109257153 |
| Stock Number | 12535ICOM |
| Interchange Number | 56484 |
| Location | COMPT65 |
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $350-$500 | 1 year | Brand new, longest wait time |
| Aftermarket | $200-$350 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $100-$150 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $75 | 90-Day Warranty | Tested, Grade X, ships in 24hrs |
🔍 Free Fitment Check
Call us with your VIN and we will verify compatibility for free. No obligation, no pressure — just answers.
Our parts specialists check interchange data in real-time
This part ships via FedEx Ground. Prices are estimates — call for an exact quote to your zip code.
| Region | Estimated Cost | Transit Time |
|---|---|---|
| New England (NH, MA, ME, VT, CT, RI) | $15 – $30 | 1–3 business days |
| Northeast (NY, NJ, PA, MD, VA) | $20 – $40 | 2–4 business days |
| Southeast (FL, GA, NC, SC, TN) | $25 – $45 | 3–5 business days |
| Midwest (OH, MI, IL, IN, WI, MN) | $30 – $50 | 3–5 business days |
| Southwest (TX, AZ, NM, OK) | $35 – $55 | 4–6 business days |
| West Coast (CA, OR, WA) | $40 – $65 | 5–7 business days |
Local pickup is always free. Free delivery within 30 miles of Plaistow, NH.
Ready to order? Call (603) 392-7313 or add to cart above. We are here to help.
| Weight | 2-3 lbs |
|---|
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The customer service at 603 was great. They found the part I needed very quickly and promptly notified me when it was ready to be picked up. There wasn’t any other place in the area that had what I needed. The price was very good also. I will be using them again for sure.
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