Driver Assist Systems
These are Advanced Driver Assist System (ADAS) Indicator symbols. These images will appear in a vehicle’s information display in gray scale or yellow/amber/orange. It is either the image of a car inside two straight lines as well as curved lines radiating from the front and the rear corners of the car. It looks nearly boxed in. The first symbol in yellow/amber/orange has a letter P in a box with lines radiating from it in all directions. The system in this case is being used for park assistance, with the lines in the corners illuminating if an obstacle is detected. The second light in yellow/amber/orange has an exclamation point in the center and indicates a fault in the system.
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More Versions
These versions, called by the manufacturer Safety Support Indicators, is seen as a vehicle from above inside a circle, also in yellow/amber if one of the systems noted below is not functioning properly. The circle represents that the vehicle is protected all around from all sides. It may be seen in gray scale as well in the information display. The trouble may be as simple as snow and ice accumulated on or near the sonar sensors. In green, the system is up and running properly.
This version is also an outline of a car inside a circle, but appears in gray scale. The manufacturer in this case has the indicator appear when one of nearly a dozen assist system options is turned off. It is thus there to alert the driver to that fact.
This symbol is connected to a version called a Travel Assist System. It will be seen in green when activated, but will be seen in yellow/amber if a fault occurs. In this instance, the system will not engage or will be deactivated. If it is seen in gray scale, it is inactive, but not due to a fault. The system is lying in wait. When active, its primary function is maintain control of the vehicle in highway driving conditions as an advanced Adaptive Cruise Control System.
Finally, this image will be seen in green if the driver assist system is active, or in gray if the system has been interrupted. This is not likely a fault situation, but rather due to the application of the brakes or a sensor blocked by debris. The assist system may come back on its own if the sensors clear, but will need to be re-engaged if the brakes have been applied.
Any versions of the warning light will be accompanied by information on the status of a number of systems, depending on what the vehicle is equipped with. Park Assist, Lane Departure Warning (LDW) and Lane Departure Prevention (LDP), Blind Spot Warning (BSW) and Blind Spot Intervention (BSI), Distance Control Assist (DCA), Forward Emergency Braking (FEB), and/or Predictive Forward Collision Warning (PFCW).
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Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.
These posts are for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.
Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.
These are all versions of Differential Lock Indicator 
This version, an AWD LOW indicator, also says that the vehicles axles are locked together in low gear. All the wheels will turn at the same rate, and should only be operated at low speed in slippery conditions, which is also why this indicator and all the others are shown in 
If this system is accidentally engaged, your vehicle will hitch and buck and feel like it is going to tear itself apart at normal speeds. Come to a stop and look for the symbol on your dash or console and disengage the system. Drive forward or backward a few feet to complete the disengagement.
This version, seen in black and white, is seen in the information display and will be accompanied by a text explanation. The open circle in the center indicates a malfunctioning differential lock. Again, a helpful explanation will be seen with the warning light, although resolving the problem will likely require a qualified repair shop.
The indicator may turn up as symbols in all text, like the Diff (differential) Lock or All Wheel Drive (AWD) Lock Indicators shown here to the left. They mean the same as the images above.
These are Rear Differential Lock indicators. The versions on the left features a large closed circle or a pad lock between the two rear (bottom) wheels. The version to the right uses an X in place of the closed circle and is an Electronic Rear Differential Lock indicator. Both versions indicate that the two rear wheels have been locked to rotate together. Like the center lock options above, a button or dial on the dashboard or center console has been engaged locking the wheels and can be turned off.
The exclamation point indicates a malfunction on the differential lock system. It is likely electronic, so try restarting the vehicle. If the vehicle is equipped with an Information Display and a CHECK DIFFERENTIAL or DIFFERENTIAL MALFUNCTION message is shown, contact your dealer. If the vehicle hitches and bucks like a bronco at speeds above 20 MPH and the Lock cannot be disengaged, reduce speed and go straight to your dealer or service center, or have the vehicle towed.
There are now options to lock either or both of the front and rear axles electronically from some manufacturers. These padlock images are Front and Rear Axle Lock Indicator symbols. The image with the double locks indicate that both front and rear locks have been engaged.