relay
A relay is a small device that lets the car’s computer turn on or off parts like the fuel pump, using a tiny electric signal.
A relay is an electrically operated switch that controls high-current circuits, such as a fuel pump, using a low-power signal from the vehicle’s computer.
Hear It Discussed
"I, for another previous problem, I replaced the relay that's underneath the dash. Oh."
#2614: The Sludgehammer The Best of Car Talk
"a normal car per se, most are run fan switch, computer command or a fan switch that goes to a relay which will just flip one way or the other and run a higher a fan."
Ron Ananian, The Car Doctor - Classic Car Doctor - September 26, 2015 - Hour 1 - Volkswagen in the Hot Seat: Emissions Scandal Ron Ananian The Car Doctor
"...if it's powered by a relay, go to a relay... Switch it out with the other one... and a wiper turns on or a horn turns on."
Can the Technician Shortage Be Fixed?? | Josh Fowler The Jaded Mechanic Podcast
Cars Known For This
Episodes Mentioning "relay"
Episode #227 - When was Peak Volvo?
Another Pointless Automotive Podcast
Ron Ananian, The Car Doctor - Classic Car Doctor - September 26, 2015 - Hour 1 - Volkswagen in the Hot Seat: Emissions Scandal
Ron Ananian The Car Doctor
Ron Ananian, The Car Doctor - May 9, 2026 - Hour 2 - The Problems Your Car Isn’t Warning You About
Ron Ananian The Car Doctor
Ron Ananian, The Car Doctor - May 2, 2026 - Smarter Repairs Start with Better Information: Inside Mitchell 1
Ron Ananian The Car Doctor
4 Cars Down Overnight?! The Reality of "Car Down" No One Talks About
Car Connection Workshop
Can the Technician Shortage Be Fixed?? | Josh Fowler
The Jaded Mechanic Podcast
#2614: The Sludgehammer
The Best of Car Talk
337: BMW X1 Parasitic Draw Diagnosis Throws Me A Curveball
Automotive Diagnostic Podcast
Talking cars and life with Wayne Carini. Looking for a holiday gift, check out Wayne's new book
The Car Doctor Podcast
#2593: Driving Blind
The Best of Car Talk
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