300CE (124.050) L6-3.0L (103.983) (1989)
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In addition to the installation of the modified control unit, part no. 004 820 11 10, either harness "A" or "B" (Figure 3) must be used depending on which
control unit was installed in the vehicle (see "Cross Reference: Control unit/harness").
Cross Reference: Control Unit/Harness
A reminder that the modified version of the SRS control unit has been installed, and that a revised diagnostic test must be performed, is imprinted on the
top of the test connector (as "Airbag 1/3, modified test"). The modified SRS control unit made a revision to the diagnostic procedure necessary. The
revised diagnostic test card should be kept with the tester. All previous versions of the card are invalid and should be destroyed.
Installation of the modified SRS control unit, part no. 004 820 11 10, will cause the SRS warning lamp to go out 4 seconds after turning the key to
steering lock position 1 or 2 (10 seconds with previous version control unit).
