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 (transmission control module) for 2003 Hyundai Elantra. This electronic control unit manages transmission functions and has been inspected for proper operation. Interchange number 61658A, stock ELACBX24.
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This used OEM chassis brain box is a transmission control module pulled from a 2003 Hyundai Elantra donor vehicle. The unit carries ID number 9544039231 and is located in the left-hand kick panel area of the vehicle. This electronic control module has been inspected and is currently on the shelf ready to ship.
The chassis brain box serves as the transmission control module (TCM) that manages automatic transmission shifting, torque converter lockup, and transmission diagnostics. These units commonly fail due to internal circuit board corrosion, power supply issues, or software corruption, leading to erratic shifting, transmission codes, or complete transmission failure. Replacing a faulty TCM restores proper transmission operation and eliminates related diagnostic trouble codes.
603 Auto Salvage maintains over 50,000 used auto parts in stock from more than 1,100 vehicles, ensuring quality OEM replacements for your repair needs. Our experienced team can help verify compatibility and arrange fast shipping to get your vehicle back on the road. Contact us or browse our extensive inventory online 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 – Transmission Control Module |
| Interchange # | 61658A |
| OEM Part Number | Contact for OEM# |
| Side | N/A |
| Part Grade | X — Used OEM part – Inspected and ready to ship, ID 9544039231 |
| Warranty | 90-Day Warranty (Standard warranty for electronic control modules) |
| Type | Used OEM |
| Year / Make / Model | 2003 HYUNDAI ELANTR |
| VIN | N/A |
| Vehicle Stock # | ELACBX24 |
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Chassis Brain Box – Transmission Control Module:
| ✅ Connector Pins | All pins straight and corrosion-free |
| ✅ Circuit Board | No visible damage or burn marks |
| ✅ Housing Integrity | Case intact with no cracks |
| ✅ Mounting Tabs | All mounting points secure |
| ✅ Part Number Verification | ID 9544039231 confirmed |
Based on interchange #61658A, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2001-2006 | Hyundai | Elantra | Automatic transmission models |
| 2002-2005 | Hyundai | Accent | With automatic transmission |
| 2003-2008 | Hyundai | Tiburon | Automatic transmission equipped |
| 2001-2005 | Kia | Rio | Automatic transmission models |
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
Common symptoms include harsh or erratic shifting, transmission slipping, check engine light, transmission stuck in one gear, or complete transmission failure. The TCM may also trigger diagnostic codes related to transmission performance.
Most Hyundai transmission control modules require programming or adaptation procedures after installation. Contact a qualified technician or dealership to ensure proper programming for your specific vehicle.
The chassis brain box (TCM) is typically located in the left-hand kick panel area inside the vehicle cabin. It may also be found under the dashboard or behind interior trim panels.
Yes, this TCM with interchange number 61658A fits multiple Hyundai models including Accent and Tiburon, as well as some Kia Rio models with automatic transmissions. Contact us to verify compatibility for your specific vehicle.
Signs include transmission not shifting properly, stuck in limp mode, diagnostic codes P0700-P0799 range, harsh shifting, or no communication with scan tools. A professional diagnosis can confirm TCM failure versus other transmission issues.
Looking for this part by number? Here are the reference numbers:
| Interchange Number | 61658A |
| Unit ID Number | 9544039231 |
| Stock Number | ELACBX24 |
| 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 lbs |
|---|
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