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engine light on
07-12-2007, 03:00 AM
Post: #1
engine light on
I have a 94 Mercedes Benz e320 with 217k miles. The engine check engine light is on, Where is the switch to turn this off. Pls help...ThanksRolleyes
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07-12-2007, 11:35 AM (This post was last modified: 07-12-2007 11:36 AM by CaryJoeYork.)
Post: #2
RE: engine light on
You can disconnect the battery for about 1 min. and it should reset. But if the light is on that indicates a problem and it will come back on. Below are some instructions.

Turn ignition "ON".
Press push button on data-link connector for 2 - 4 seconds.
Read and record fault code(s) (DTC).
The LED will commence with (blink) impulse readout.
The fault code will be indicated by the number of LED impulses. Take note of the number of impulses.
After the fault code has been displayed, the LED will remain lit.
Press push button again for 2 - 4 seconds.
Read and record the next fault code.
Repeat steps 2 and 5 until the first fault code reappears.
NOTE : It is only possible to read codes from the Diagnostic Module (DM) using this procedure. All other modules/systems require the use of either a Mercedes Hand-Held Tester or an impulse counter scan tool.

NOTE : DTC's which have been stored due to testing or disconnecting of lines must be erased from the DTC memory at the end of testing.

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Cary Joe York
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