Security and Immobilizer System Indicator Symbols

Security, Immobilizer

These are Security and/or Immobilizer System Indicator symbols used by auto manufacturers. One of these symbols is illuminated momentarily to indicate that the ignition switch is locked and will need the proper transponder-equipped key  fob to start or re-start. The vehicle is immobilized otherwise. Green symbols will flash when the vehicle is immobilized.

  • But first, is one of these truly your symbol?? If yes, continue on below.
  • Otherwise return to our main Picture Symbols page and scan again!

The text symbols Security or Theft, shown to the left have largely been replaced by the padlocked car image shown next to it, in red or yellow/amber/orange. Their operation is the same as those above, with one exception. One manufacturer (Alfa Romeo), also uses the first padlock image in yellow/amber to warn of an attempted break in!

However, if any of these symbols is visible when the vehicle is operating, it indicates a malfunction in the security system. The red dot to the left is on old style indicator. If the engine does not start with the correct key, and the security indicator remains on or flashes, the system may have a malfunction. You will need to contact your dealer or authorized service center in either case.

Similar Symbols

Do not confuse these with other automotive trouble symbols that make use of the image a key. Click here or here, right to left, for more information.

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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Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow.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.

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