1997 Mercedes Benz S420 LOCATION OF BLOWER MOTOR RELAY

DEACO.1234

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1997 MERCEDES BENZ S420

Air Conditioning problem
1997 Mercedes Benz S420 Two Wheel Drive Automatic 92505 miles

I'M TOLD THAT I HAVE A BAD BLOWER RELAY PART NUMBER BEHR90341GKR I NEED TO KNOW WHERE IT'S LOCATED IN MY CAR. THANKS IN ADVANCE FOR ANY HELP YOU CAN OFFER. THE BLOWER MOTOR DOES NOT WORK AT ALL SO PERHAPS I WAS WRONG ON THE NAME OF THE PART. LETS GO WITH THE LOCATION OF THE RESISTOR, OR SWITCH AS I THINK THAT'S PROBABLY MY PROBLEM. THANKS AGAIN FOR YOUR HELP. DEACO

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
48,363 POSTS

Hey Deaco,

There is no resistor, but there is a speed control module which is right next tot he blower motor. here is a wiring diagram that show you how the circuit is routed out and a guide that will help you test for the problem and get it fixed.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please run some tests and get back to us so we can continue helping you.

Best, Ken

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