Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Malfunction Indicator Lamp: Service and Repair

Service Vehicle Soon Indicator


If this light is on, it indicates a problem in one of the electronically monitored systems such as Heating and Air Conditioning or Cruise Control.
This light does NOT come on at certain milleage intervals.
There is probably a Body Control Module Code or non-Emission related Powertrain Code set that will aid you in diagnosis.

The only way to get the light to go off is to clear the BCM/PCM code(s).
This light can NOT be reset or shut off any other way.
Codes should be read & repaired before clearing them.