There is a bulletin about this same type of issue. This is not the complete bulletin but the 1st page that talks about the problem. Have the dealer print out TNN 36-58 for you. They might refuse to do this. It is a wiring kit that installs under the dash area to correct this issue. This is not warrnaty or a recall. You will have to pay the dealer for the parts and labor to install the wiring kit. BD.
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NO: 36-58
DATE: 5-1-2007
MODEL: S40, V40
M. YEAR: 2000-2004
SUBJECT: Immobilizer Warning Lamp Lit or Flashing, IMMO-DTC 321
REFERENCE: VIDA
DESCRIPTION:
In S40 and V40 cars, the Immobilizer warning lamp may be lit after a successful cold start.
After a restart, or after switching ignition off and on, the warning lamp is not lit any more.
While the warning lamp is lit (engine is still running), Immobilizer Diagnostic Trouble Code
IMMO-DTC 321 is stored. This DTC indicates a communication problem between IMMO-ECU
and ECM (Engine Control Module). When the warning lamp is not lit, there are no IMMO or
ECM DTCs stored.
The customer may also experience intermittent no crank (starter motor not activated) and
flashing Immobilizer warning lamp in the DIM. In most cases the engine will crank normally if
the ignition is switched off and a new start attempt is made. In a few cases, several start
attempts are needed to get the engine running.
SERVICE:
Install service harness P/N 30652280