Description
Part Description
This Electronic Control Module (ECM), also known as an engine brain box, was removed from a 2008 Hyundai Sonata equipped with a 2.4L automatic transmission. The part has been thoroughly inspected by our technicians and is currently on the shelf ready for immediate shipment. This OEM Hyundai component carries part number 39100-25136 and is guaranteed to be in working condition.
The Electronic Control Module is the central computer that manages your engine’s performance, controlling fuel injection, ignition timing, emissions systems, and transmission operation. ECMs commonly fail due to electrical surges, water damage, or internal component degradation over time, causing symptoms like rough idling, poor fuel economy, transmission shifting issues, or the vehicle failing to start. When your Sonata’s ECM fails, a quality used OEM replacement is often the most cost-effective solution.
At 603 Auto Salvage, we maintain an inventory of over 50,000 parts from more than 1,100 vehicles to serve your automotive needs. Our experienced team can help you find the exact Electronic Control Module for your Hyundai Sonata. Contact us today or browse our online inventory to discover the quality used parts that will get your vehicle back on the road reliably and affordably. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
Part Specifications
| Part | Electronic Control Module (Engine Brain Box) |
| Interchange # | 50589 |
| OEM Part Number | 39100-25136 |
| Side | N/A |
| Part Grade | X — Grade X – Working condition, inspected and ready to ship |
| Warranty | 90-Day Warranty (Standard warranty for electronic control modules) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2008 HYUNDAI SONATA |
| VIN | N/A |
| Vehicle Stock # | PCM9161 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Electronic Control Module (Engine Brain Box):
| ✅ Connector Integrity | All electrical connectors checked for damage and corrosion |
| ✅ Housing Condition | ECM case inspected for cracks, water damage, and physical damage |
| ✅ Pin Condition | All connector pins verified to be straight and undamaged |
| ✅ Internal Function | Module tested for proper electrical response and communication |
| ✅ Part Number Verification | OEM part number 39100-25136 confirmed and documented |
| ✅ Mounting Points | Mounting tabs and brackets checked for integrity |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #50589, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2008 | Hyundai | Sonata | 2.4L automatic transmission – Contact us for full compatibility list |
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
Warranty & Shipping
Frequently Asked Questions
Will this ECM work in my 2008 Hyundai Sonata?
This ECM is specifically for 2008 Hyundai Sonata models with 2.4L automatic transmission. Contact us with your VIN to confirm exact compatibility before purchase.
Does the ECM need to be programmed after installation?
Yes, most ECMs require programming to your vehicle’s VIN and may need key programming. We recommend having this done by a qualified technician or dealership.
What are signs that my ECM is failing?
Common symptoms include engine misfiring, poor fuel economy, transmission shifting problems, check engine light, or the vehicle not starting. A diagnostic scan can help confirm ECM issues.
Is this a genuine Hyundai part?
Yes, this is an original OEM Hyundai Electronic Control Module with part number 39100-25136, not an aftermarket replacement.
How long does shipping take for this ECM?
This part is currently on our shelf and typically ships within 1-2 business days via FedEx Ground. Delivery time depends on your location.
Can I return this ECM if it doesn’t work?
Yes, we offer a 90-day warranty on this Electronic Control Module. If you experience any issues, contact us for warranty service or return options.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Hyundai Part Number | 39100-25136 |
| Interchange Number | 50589 |
| Stock Number | PCM9161 |
Price Comparison — Why Used OEM Makes Sense
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $400-600 | 1 year | Brand new, longest wait time |
| Aftermarket | $250-400 | 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 |
Installation Notes
- Disconnect battery and wait 10 minutes before removing old ECM to prevent electrical damage
- Take photos of connector positions before disconnecting to ensure proper reconnection
- Handle the ECM carefully and avoid touching connector pins or circuit boards
- Ensure all connectors are fully seated and locked in place during installation
- Have the ECM programmed by a qualified technician after installation
- Clear any stored error codes after programming is complete
🔍 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
Estimated Shipping Costs by Region
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.
Why Buy From 603 Auto Salvage?
- 50,000+ parts in stock from over 1,100 vehicles on-site in Plaistow, NH
- Every part inspected before listing — no guesswork
- Family-owned salvage yard — real people, not a call center
- 90-Day Warranty on this part
- Fast shipping — most orders ship within 24 hours
- Competitive pricing — save 50–70% vs dealer prices
- Serving New Hampshire, Massachusetts & all 50 states
Ready to order? Call (603) 392-7313 or add to cart above. We are here to help.




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