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Old 10-11-2021, 09:31 AM   #9
kgsc
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Join Date: Dec 2009
Location: Aiken, SC
Posts: 13,005
Default Re: 2018 Express S4 Gas

I think you found the solenoid. That is different than the relay. The relay shorts the ignition coil to shut the engine. Solenoid will have two large posts and two small ones. Put a meter on the two small terminals and hit the go pedal. You should see 12 volts.
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