Description
Part Description
This engine control module (ECM) was removed from a 2010 Toyota Prius equipped with the 1.8L hybrid engine and automatic transmission. The electronic control unit has been professionally inspected by our technicians and is currently on the shelf ready to ship. This OEM Toyota part controls critical engine functions including fuel injection, ignition timing, and emissions systems.
Engine control modules commonly require replacement due to electrical failures, water damage, or internal component degradation over time. Symptoms of a failing ECM include poor fuel economy, rough idling, engine stalling, or illuminated check engine lights. This genuine Toyota ECM ensures proper communication with your Prius hybrid system and maintains optimal engine performance and fuel efficiency.
603 Auto Salvage maintains over 50,000 quality used parts in stock from more than 1,100 vehicles in our Plaistow, NH facility. Our experienced team can help you find the exact ECM or other components you need for your Toyota Prius. Contact us today to verify compatibility and arrange fast shipping to your location. 50,000+ parts in stock from over 1,100 vehicles. Contact us or call (603) 392-7313 for anything you need.
Part Specifications
| Part | Engine Control Module (ECM) – Electronic Control Unit |
| Interchange # | 52499B |
| OEM Part Number | Contact for OEM# |
| Side | N/A |
| Part Grade | C — Grade C – Good working condition from 200K mile vehicle, inspected and ready to ship |
| Warranty | 90-Day Warranty (Standard warranty for electronic components with higher mileage) |
| Type | Used OEM |
Vehicle Information (Donor)
| Year / Make / Model | 2010 TOYOTA PRIUS |
| VIN | N/A |
| Vehicle Stock # | 1003246626 |
Our Testing & Inspection Process
Every part at 603 Auto Salvage is inspected before listing. Here is what was verified on this Engine Control Module (ECM) – Electronic Control Unit:
| ✅ Electrical Connections | All connector pins clean and undamaged |
| ✅ Housing Integrity | No cracks or physical damage to ECM case |
| ✅ Internal Components | No signs of water damage or corrosion |
| ✅ Mounting Points | All mounting tabs and brackets intact |
| ✅ Circuit Board | No visible component failures or burn marks |
Compatibility — What Vehicles Does This Part Fit?
Based on interchange #52499B, this part fits the following vehicles. Always confirm fitment with your mechanic before purchasing.
| Year(s) | Make | Model | Notes |
|---|---|---|---|
| 2010 | Toyota | Prius | 1.8L engine with automatic transmission, from 9/09 production |
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 2010 Toyota Prius?
This ECM fits 2010 Toyota Prius models with 1.8L engines and automatic transmissions produced from September 2009. Contact us with your VIN to verify exact compatibility before ordering.
Does the ECM need to be programmed after installation?
Yes, this engine control module will need to be programmed by a Toyota dealer or qualified technician to match your vehicle’s VIN and specifications. Programming is required for proper operation.
What causes Toyota Prius ECM failure?
Common causes include electrical surges, water damage, internal component aging, and extreme temperature exposure. Symptoms include poor fuel economy, rough running, and check engine lights.
How long does ECM shipping take?
This part is on our shelf ready to ship and typically arrives within 3-5 business days via FedEx Ground to most locations in the continental United States.
Can I return this ECM if it doesn’t work?
Yes, we offer a 90-day warranty on this electronic component. If the part fails during normal use within the warranty period, we will provide a replacement or refund.
Related Parts & Resources
OEM Part Numbers & Cross-Reference
Looking for this part by number? Here are the reference numbers:
| Interchange Number | 52499B |
| Part Number | 590 |
| Stock Number | 1003246626 |
Price Comparison — Why Used OEM Makes Sense
| Source | Price Range | Warranty | Notes |
|---|---|---|---|
| Dealer (New OEM) | $800-1200 | 1 year | Brand new, longest wait time |
| Aftermarket | $400-600 | Varies | Non-OEM fitment, quality varies |
| Other Salvage Yards | $150-250 | 30–60 days | Varies in quality and testing |
| 603 Auto Salvage | $100 | 90-Day Warranty | Tested, Grade C, ships in 24hrs |
Installation Notes
- Disconnect battery and wait 10 minutes before removing old ECM to prevent electrical damage
- Take photos of wiring connections before disconnecting to ensure proper reconnection
- Handle ECM carefully and avoid static electricity – use anti-static wrist strap if available
- Ensure all electrical connections are clean and tight before starting vehicle
- Have ECM programmed immediately after installation for proper vehicle operation
🔍 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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