Husqvarna Automower Collision & Lift Errors Completely Explained For 430X, 430XH, 450X, & 450XH

In this video we cover nearly everything there is to know about the collision and lift sensing systems on Husqvarna Automower models 430X, 430XH, 450X, 450XH, 520, 520H, 550, 550H, 550 EPOS, & 550H EPOS. Many people think that collision or lift errors are isolated only to the front or rear joysticks on these models of @HusqvarnaUSA Automowers. In reality though there are several other components that are involved in both the collision detection and lift detection systems on these Automower models. In this video we start with a Husqvarna 450XH Automower that has a collision active error message on it. We start by going through the simple process of checking to make sure that the body is properly mounted to the joysticks, checking the snaplock caps to make sure they are still in good condition and the center is not poked out, checking the condition of the joysticks to make sure nothing is bent or twisted, and making sure the magnet is still in the magnet holder in the nose of the mower under the charging plates. From here we move on to checking the sensor information in the Automower’s quick info menu (Not available on 500 series) to determine which sensor is showing that it is active and checking which sensors are working properly. Then it’s on to the inside of the mower to further examine the joysticks, sensor circuit boards, and wiring to determine what is causing the mower to give the error message.

Looking for parts used in this video?

Snaplock Caps:

Lift Sensor (complete):

Rear Joystick:

Collision Sensor Board:

Magnet Holder (XH & H Models):

Magnet Holder (X Models)

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Collision Active, Collision Error, Lifted Error, Sensor Diagnosis, Automower Repair

This video is brought to you by Robotic Mower Services, LLC. Not only are we an authorized Husqvarna Automower dealer, but we are one of the top Husqvarna Automower dealers in North America for Automower sales, Automower parts, Automower service, and Automower technical support. Our dedication to providing service, parts, and troubleshooting information to the Automower community lead to @Husqvarna naming us the very first winner of their AAP Award of Excellence! This effort we put into supporting the Automower product and Automower customers combined with our hands on real world experience is what separates us from other Automower dealers.

Did you know that Automowers, or “Husqvarna robot mowers” as some people call them, have actually been in use since the mid 90’s? See the evolution of models and features of Automowers from the worldwide leader in robotic lawn mowers here:

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13 thoughts on “Husqvarna Automower Collision & Lift Errors Completely Explained For 430X, 430XH, 450X, & 450XH”

  1. This is a first class video with clear explanation of steps and a methodical, logical approach to problem diagnosis. Thank you for sharing your expertise. Hopefully this will help me repair a 10 year old mower that has been cutting my grass relentlessly despite the collisions, weather, drowning, and being thoroughly trampled by an escaped bull (no joke). If it doesn't help, the video was still well worth watching.

  2. When I switched the ribbon cable around, the rear collision went away, but I didn’t get a front collision. I was going to order a replacement just to be safe, but I don’t see it on you website? 430x btw

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