PACCAR MX 13 and MX 11 ECM/ECU Repair

Paccar

PACCAR MX 13 and MX 11 ECM/ECU Repair

Paccar
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Ready for a quick repair?

Mail in your device for a quick and hassle-free repair.

  1. Step 1: Place your order
  2. Step 2: Provide repair details & ship item.
  3. Step 3: Receive a repaired module within days, not weeks.
  • Repaired within days, not weeks
  • No programming required
  • 60% Faster Turnaround Time Than Dealerships
  • Hassle free 1-year Warranty

PACCAR MX13 & MX11 ECM Repair Service in California

When your PACCAR MX13 or MX11 ECM (Engine Control Module) fails, it can leave your Kenworth or Peterbilt truck down and costing you money. At Module Repair Lab, we provide fast and reliable ECM repair services across California, helping truck owners avoid expensive dealer replacements and extended downtime.

Common PACCAR ECM Failures We Repair

  • Truck cranks but won’t start, or intermittent no-start
  • SPN/FMI codes related to ECM hardware failure
  • Loss of communication with diagnostic software
  • Failed injector or sensor drivers
  • Voltage regulator and power circuit faults
  • Heat or water damage inside the module

Why California Truckers Choose Us

  • Local Expertise – Serving drivers and fleets across California including Los Angeles, Fresno, Sacramento, Stockton, Bakersfield, Modesto, and the Bay Area.
  • Save Big – Our repair service is a fraction of dealer ECM replacement costs.
  • Fast Turnaround – Most ECMs repaired in just 2–3 business days.
  • 4-Month Warranty – Coverage for repeat failures of the same issue.
  • Mail-In & Walk-In Options – Ship your ECM from anywhere in California or drop it off directly at our Central California location.

Compatible PACCAR Engines & Trucks

  • PACCAR MX-13 (2010–Present)
  • PACCAR MX-11 (2013–Present)
  • Kenworth trucks equipped with MX13/MX11 engines
  • Peterbilt trucks equipped with MX13/MX11 engines

How Our ECM Repair Service Works

  1. Order online to start your repair request.
  2. Ship or drop off your ECM to our repair facility in California (instructions provided after checkout).
  3. We diagnose, repair, and bench-test the unit using professional-grade equipment.
  4. Your repaired ECM is returned fully functional and ready to reinstall.

Important Service Notes

  • This listing is for repair of your existing ECM — no replacement or exchange units are provided.
  • Removal and installation are not included and should be done by a qualified technician.
  • Please include truck details (year, engine type, symptoms) with your ECM when shipping or dropping off.

Frequently Asked Questions

Do you serve all of California?
Yes. We handle ECM repairs for customers across California, including Southern California (Los Angeles, San Diego), Central Valley (Fresno, Bakersfield, Modesto, Merced), Bay Area (San Jose, Oakland, San Francisco), and Northern California (Sacramento, Redding, Chico).

How long will my truck be down?
Most ECMs are repaired and shipped back within 2–3 business days, minimizing downtime for California fleets and independent operators.

Do you warranty the repair?
Yes, we include a 4-month warranty on all repairs covering the same failure.

Please ship your module to the following address:

Module Repair Lab
113 South Lake Street
Madera, CA 93638
United States

Make sure to include your contact information and order number inside the package to help us process your repair quickly.

We recommend using a trackable and insured shipping method to ensure safe delivery. Once your repair is complete, we will ship it back to the return address you provide.

If you have any questions, feel free to contact us.

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What People Are Saying

How it Works

We offer a cost-effective solution to pricey dealership part replacements, saving you a significant amount of money. Our approach goes beyond simply repairing the faulty part – we address the underlying issue and use top-quality upgraded parts to ensure a long-lasting fix. We stand behind our service with a 100% satisfaction guarantee or your money back.

  1. To get started, carefully remove the part from your vehicle. If you’re unsure how to do this, you can take it to your local body shop for assistance.
  2. Once the part is removed, pack it securely in a suitable box to prevent any damage during transit.
  3. Don’t forget to print out your order confirmation page and include it in the package, along with your name, return address, and phone number

Unbeatable Warranty.

This warranty covers the repair of the part for a duration of one year starting from the date of repair. In the event of a malfunction within this period, we will carry out repairs free of charge. In the rare circumstance that the item is deemed irreparable, we reserve the right to either replace the circuit board or refund the cost of repair, at our discretion. Please note that this warranty is non-transferable and applies only to the original purchaser of the part. Furthermore, damages caused by misuse, accidents, or unauthorized repairs will not be covered under this warranty and will result in the warranty becoming void. If you have any inquiries or concerns regarding this warranty, please feel free to reach out to us.

FAQs

113 South Lake Street, Madera, CA 93638

info@modulerepairlab.com

Turnaround time is fast—typically 1 to 2 business days once we receive your module.

You can pay on the website with PayPal or a credit card or you can send the module in with your information and we will contact you for a credit card after the repairs have been performed.

Yes, we stand behind our work with a 1-year limited warranty for most products covering defects in parts and workmanship. Buy with confidence.