Diesel Exhaust Brake
These are Diesel Exhaust Brake Indicator symbols. One of the indicators will be seen when the Diesel Exhaust Brake has been activated and is in full strength mode (first image) or in Automatic (AUTO) mode (second image). The appearance is that of a less than sign or a sideways V with wavy lines at one end, all inside a circle inside brackets. The latter is a standard part of many symbols associated with brakes.
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The exhaust brake feature will function when the driver toggles it on by pushing the exhaust brake button until the indicator is seen. Normal (Full Strength) exhaust brake mode is indicated by the yellow/amber Exhaust Brake Indicator.
Turned Off
Automatic or Smart Exhaust Brake can be enabled by pushing the exhaust brake button again anytime after the normal Full Exhaust Brake has been turned on. The Exhaust Brake Indicator will change from yellow/amber to green when Automatic Smart Exhaust Brake is enabled. Pushing the exhaust brake button again will toggle the exhaust brake mode to off.
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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Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow.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.
The author has 25 years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s College, ME: MS, Rensselaer Polytechnic Institute, NY