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June 1, 2021 NHTSA CAMPAIGN NUMBER: 21V408000
Lighting and HVAC Display May Lock Up
If the LCD display becomes locked up or non-functional it can delay emergency efforts, which can increase the risk of injury.
NHTSA Campaign Number: 21V408
Manufacturer Custom Truck And Body Works
Components ELECTRICAL SYSTEM
Potential Number of Units Affected 990
Summary
Custom Truck and Body Works (Custom Truck) is recalling certain 2020 F550 vehicles equipped with Weldon V-Mux Vista IV Standard LCD displays. These displays may experience low voltage spikes, and cause the LCD display to lock up or become nonfunctional, due to varying electrical installations.
Remedy
Dealers will replace the IV Standard LCD displays, free of charge. The manufacturer has not yet provided a schedule for recall notification. Owners may contact Custom Truck customer service at 1-888-712-2963.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
TECHNICAL SERVICE BULLETIN 20-10
V‐MUX Vista IV Interface
October 28, 2020
IMPORTANT SAFETY RECALL INFORMATION
This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Weldon, a division of Akron Brass has decided a safety related defect may exist with some Vista IV user interface panels. A list of units that shipped to you and are potentially affected is attached. This notice covers both touch and non‐touch versions of the Vista.
Power and ground are critical to proper operation of electronics including the Vista IV display. The Vista IV display has an operating voltage of 9‐32 VDC. When the supply voltage at the display drops, even for a moment, such as when starting the engine, the V‐MUX® Vista IV Interface typically turns off and quickly and automatically restarts. However, units in the attached list may not restart on their own if the voltage dips out of range (less than 9 volts) which can increase the risk of injury. These units are different because a component part became obsolete. This may lead to a blank display and sometimes loss of button function when the LCD display or the CPU do not restart properly. The installer supplied wiring and loads engaged when starting the vehicle, may have an impact on whether the issue presents itself in any one vehicle installation.
Weldon will be remedying affected units on this list free of charge, but in the meantime, cycling the power will reset the unit and allows normal operation. This can be accomplished with a power reset button, if so equipped, or by restarting the vehicle to allow an existing display to operate.
Unit serial numbers on the attached list are Vista IV displays that our records show were shipped to you and that are part of the recall.
Weldon will provide updated replacement Vista IV units that are less sensitive to voltage drop, and 1 hour of warranty labor to install the replacement display units.
Please contact Brett Carlson, BCarlson@idexcorp.com or your Weldon representative to arrange the remedy.
Please note that it is a violation of Federal Law to deliver a vehicle which is subject to a recall without the remedy installed.
If you believe there is a failure to remedy this defect without charge to the end user/owner of the vehicle and within a reasonable period of time, you may submit a written complaint to the Administrator, NHTSA, 1200 New Jersey Ave, SE, Washington, DC 20590, or call the Vehicle Safety Hotline 1‐888‐327‐4336 (TTY: 1‐800‐424‐9153) or go to https://www.safercar.gov.
Thanks for your prompt attention to this matter and continued support of Weldon.
Customer Care PH. 800.228.1161
20E078 – Lighting and HVAC Display May Lock Up – Weldon V-Mux Vista IV Standard
1 Affected Product
Vehicle
| MAKE | MODEL | YEAR |
| CUSTOM TRUCK & BODY WORKS | FORD F-550 | 2020 |
5 Associated Documents
ISSUED Owner Notification Letter(Part 577)
RCONL-21V408-9891.pdf 115.326KB
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Recall Acknowledgement
RCAK-21V408-7242.pdf 646.916KB
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Defect Notice 573 Report
RCLRPT-21V408-8601.PDF 214.766KB
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Recall 573 Report- Amendment 2
RCLRPT-21V408-9917.PDF 214.85KB
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Manufacturer Notices(to Dealers,etc)
RCMN-21V408-4433.pdf 115.326KB
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