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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> AEM, CEM & Rem Diagnostic Trouble Codes - 8 Of 12 >> CEM-6C49: Transponder Communication. Signal Faulty. Intermittent Fault (1999-2004) >> Signal missing/faulty >> Checking starting

Checking starting

Use the same key that did not work on the previous start attempt and try it three more times.

NB, take the key out of the ignition lock for at least two seconds between each start attempt or a new transponder check will not be done. (If the key remains in the ignition lock between each start attempt the transponder check will not be done for approximately 30 seconds after the ignition is switched off).

Some of the following can happen:

  1. The engine starts every time

    Refer to Communication 

  2. The engine sometimes starts

    Refer to Faulty transponder 

  3. The engine does not start any time.

    Refer to Wrong key