2021 Ford Mustang Mach-E · symptom sheet
Adaptive cruise or lane keeping misbehaves
- 71owner reports
- $3,593median quote
- 1involved a crash
Newest report Jun 22, 2026 · checked Oct 2, 2026
124 of the 347 complaints on this car are about collision avoidance. 71 of those describe driver assist.
Tick what matches of 71 reports
Driver assist on other Mustang Mach-E years
No other Mustang Mach-E model year has enough reports of driver assist for a sheet of its own. See every Mustang Mach-E year.
What this problem usually is
These reports come from drivers whose assistance systems did something they didn't ask for. Adaptive cruise switches itself off, or brakes for a car that isn't there. Lane keeping tugs the wheel toward the line, or a "sensor blocked" message appears on a clear day. Because both systems can brake or steer, owners tend to file them as safety complaints, and NHTSA files them under speed control, lane departure or forward collision.
What got replaced
Owners who name the part that was replaced mention the camera (49 reports) and the software (16 reports).
Recalls and investigations
One recall on collision avoidance covers the 2021 model year. A recall on the same system isn't always the same failure, so read the defect text.
The powertrain control module (PCM) functional safety software may fail to detect a software error, resulting in unintended acceleration, unintended deceleration, or a loss of drive power.
All 13 recalls on the 2021 Ford Mustang Mach-E, with the owner complaints on each recalled system
What owners paid
5 of the 71 reports quote a price. Each dot is one quote. The middle half runs $2,806 to $7,000.
When it happens
Too few of these reports state a mileage to give a range.
Is this a known problem?
The manufacturer has sent NHTSA 1 service bulletin or notice for the 2021 Ford Mustang Mach-E that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
Some of the vehicles listed in the Model statement above may exhibit an inoperative Blue Cruise and Lane Keeping system with diagnostic trouble code (DTC) U3000:49 with a status byte of 8F stored in the camera module-rear (CMR).
What owners wrote
“The front camera system does not function which causes all forward collision safety features to become unavailable, as well as any cruise control or automatic high beam lights. Seems to be a common issues and is related to faulty fiber optic cables.”
Filed Jun 17, 2026
“When in cruise control, any speed, car suddenly accelerates This happens while driving, or sometimes after stopping and then resuming previous set speed. For example I was driving in cruise control at 38 mph, when the car suddenly sped to 50mph. Or when on a highway, driving at 55mph, the car suddenly accelerated to 70mph. Started about 3 weeks ago.”
Filed Sep 25, 2025
“Occasional failure of video signal from front camera located above rear view mirror causes Alert pop-up on main instrument display and loss of all Driver Assist feature that utilize the front camera such as: lane departure alert and adaptive cruise control.”
Filed Jan 12, 2023
“While driving and hitting a bump I will get a message in the driver's display stating Forward collision assist unavailable. This causes almost all of the ADAS features to stop working including cruise control and blue cruise. This is very dangerous! There is a huge thread on this issue at the macheforum.com. The issue needs to be addressed by Ford Motor Company in a recall.”
Filed Jan 9, 2023
Should you keep driving it?
This page can't tell you that. 1 of 71 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Paid for this repair before a recall covered it? How recall reimbursement works
Other problems on this car
- Forward collision warning goes off or the camera drops out 81 reports
- Battery dies or the car will not start 71 reports
- Infotainment, screen or backup camera fails 69 reports
- Hybrid or EV system warning, loss of power 55 reports
- Engine stalls or loses power while driving 43 reports
- Brakes grind, pulse or wear early 31 reports