Question about 1999 Mercury Grand Marquis

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Trying to locate intermittent wiper relay

I am trying to find an intermittent wiper (park) relay replacement part. Would I have to go to a dealer for this or can someone tell me where I might be able to locate one for my 99 marquis?

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  • ryan reynolds
    ryan reynolds Feb 05, 2014

    im having same problem on my 1987 mercury cougr xr7 i hesr a buzzing sound and seems the relay is on the fire wall way up in left hand corner it looks like i have to take the whole dash out the wipers wont park and u hear this buzzing sound its so fustrating, they dont make cars average person can work on unless u have a degree from M I T or u work for NASA, and its getting worse, my 2011 mustang is a computer on wheels that talks lolol. if anyone can give me an idea how to replace this relay on ,y 1987 cougar xr7 like to know with out dismantling the dash thanks

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5 Suggested Answers

  • 1 Answer

SOURCE: Vauxhall Vivaro Van 53 plate. Wipers not Parking

hi i have the same problem...can you tell me if you have an answer yet???

Posted on Dec 22, 2009

janinedave37
  • 16 Answers

SOURCE: intermittent/park relay

Should be under the bonnet (hood) where all the fuses & relay's are.

Part should be less than $50

Yes, you should be able to replace it yourself once you have located the correct relay.

Posted on Dec 13, 2008

jagjeffery
  • 316 Answers

SOURCE: 2004 Avalon Wiper Relay Location

The wiper relay is located behind the center of the dash i am sending you a picture of whe graphic.aspx?mod=reptiff&module_id=1&session_id=%7bea948f67-0f0f-4ed0-9a24-da53f5e661e9%7d&image_guid=00257760&print_bw=0&re it is . find (W8) in the picture.

Posted on May 28, 2009

  • 1 Answer

SOURCE: Kia Sedona's wipers stop and start

perhaps the wiper motor is bad.

Posted on Oct 02, 2009

  • 129 Answers

SOURCE: landrover discovery series 1 (1996) wiper motor

Likely the relay is the problem, the multifunction switch can fail as well.
I have the troubleshooting diagram for electrical on Series 1 Discos but a very good working knowledge of electrical circuitry is necessary to use this info.

Posted on Jan 13, 2010

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I have a 2009 gmc sierra, where is the wiper relay location.


The PCB wiper relays are soldered directly to circuit board inside the under hood fuse box.
The windshield wiper/washer switch signal circuits are inputs to the body control module (BCM) and the BCM controls wiper motor low speed operation, washer pump and high speed operation. The windshield wiper/washer switch is provided a low reference from the BCM and each of the switch signal circuits is supplied 12 volts through a resistor and monitored within the BCM. During LOW or INTERMITTENT operation the wiper switch low signal circuit is closed to the low reference circuit through a series of resistors within the switch assembly and the signal circuit voltage monitored by the BCM will depend on the switch contact location to the resistor assembly. During HIGH or WASH operation the high and wash switch signal circuits are closed directly to the low reference circuit within the switch assembly and nearly all the signal circuit voltage will be dropped across the BCM resistors. The BCM controls the wiper motor through the WIPER CONTROL PCB Relay and the WIPER SPEED PCB Relay. During any wiper motor function that uses low speed the BCM supplies the voltage to energize the WIPER CONTROL PCB Relay and battery voltage will be supplied from the WIPER CONTROL PCB Relay through the de-energized WIPER SPEED PCB Relay to the wiper motor low speed control circuit. During high speed wiper motor operation the WIPER CONTROL PCB Relay is energized as in low speed and the BCM provides a ground to energize the WIPER SPEED PCB Relay and the battery voltage is supplied to the wiper motor high speed control circuit. Wiper motor park operation is controlled by the BCM using an input from the park switch within the wiper motor assembly. The BCM supplies the park switch signal circuit 12 volts through a resistor then monitors the circuit. Whenever the wiper motor is out of the park position the park switch signal circuit is closed to ground and nearly all the signal circuit voltage will be dropped across the BCM resistor. When the wiper switch is turned to the OFF position while the wiper motor is somewhere in mid-cycle, the BCM will continue to operate the motor until the wipers reach the park position. If the ignition is turned OFF while the wipers are in mid-cycle, the wipers will stop immediately where they are and the BCM will park the wipers the next time the ignition is cycled ON.

DTC B3715 02: Front Wiper Relay Drive Circuit Short to Ground
DTC B3875 00: Wiper High Speed Relay Circuit
DTC B3922 00: Front Wiper Function Select Circuit
Have it checked for DTC'S - diagnostic trouble codes .

The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation.
The BCM controls the windshield wiper motor through two output controls, controlling two relays which determine the desired wiper speed, high or low.
Your best bet , take your vehicle to a qualified repair shop or dealer . Hooking up a factory scan tool to see what the wiper switch inputs to the BCM are correct and outputs to relays are good .

Feb 11, 2017 | GMC Cars & Trucks

1 Answer

2005 ford escape wiper and washer has no power. cant hear it engage when on but was working a week ago. how can i troubleshoot it and find the fuse


Hi Justin , Do you know what a SJB - smart junction box is and where it is located on you escape ?
Windshield Wiper Operation
The smart junction box (SJB) supplies power to the multifunction switch from the SJB fuse 25 (20A) when the ignition switch is in the ON or ACC position. The multifunction switch supplies power to the windshield wiper motor for the HIGH or LOW/INTERMITTENT input, depending on the multifunction switch position selected. The SJB also supplies power directly to the windshield wiper motor from fuse 25 (20A) when the ignition switch is in the ON or ACC position for RUN/PARK operation. When the multifunction switch is in the LOW, HIGH, or INTERMITTENT position, power is supplied to the windshield wiper motor, which moves the wipers off the park position. Once the wipers are off the park position, an internal switch in the windshield wiper motor switches to the run/park position which directs power to the wiper switch then back to the wiper motor. This maintains power to the windshield wiper motor to complete the wipe cycle. When the cycle is complete, the internal switch in the windshield wiper motor switches back to the park position. If the multifunction switch is in the LOW or HIGH position, power is supplied from the multifunction switch and another wipe cycle starts. If the multifunction switch is in the INTERMITTENT position, the windshield wipers remain parked until the internal relay in the multifunction switch supplies power to the windshield wiper motor. The internal relay supplies power after a time delay that is determined by the 1 of 9 intermittent switch settings.

Jan 08, 2017 | 2005 Ford Escape

2 Answers

I have a 93 explorer the wipers won.t work except on high i replaced the wiper motor and themultifunction switch still the same problem


I have a 95 explorer ... intermittent wiper and park not working. Hi and low works good. I replaced wiper run/park relay (R3146) Advance Auto Parts. Location underhood power distribution box left side outboard of brake fluid reservoir.

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Apr 14, 2011 | 1993 Ford Explorer Limited

1 Answer

What relays are there for the intermittent wipers and where are they located on a 1999 Ford Taurus?


the intermitent works off of the (gem) generic electronic module which controls the wipers. if wipers working except the delay cycle replace the module. the relays are located in the engine compartment . wiper park relay- wiper hi-lo relay- washer motor relay. fuse in fuse panel under driver side dash panel.

Nov 19, 2010 | 1999 Ford Taurus

1 Answer

The wipers work intermittently and I've been told I need a new wiper relay switch, but having problems locating one. 1998 Audi A4 1.9TDI. Have removed existing relay switch and it's 12V and 70A


The only place to get a wiper relay is from an Audi dealer. However, I have that same problem and the relay didn't fix it, I'm still trying to figure it out. I would try the relay first though, it's about $60 I think.

Nov 15, 2009 | 1998 Audi A4

2 Answers

Vauxhall Vivaro Van 53 plate. Wipers not Parking


hi i have the same problem...can you tell me if you have an answer yet???

Sep 21, 2009 | 2003 AMC Encore

1 Answer

Wipers won't stop wiping.


Sounds like your intermittent wiper circuit is defective. Normally the intermittent feature is engaged by one of the functions on the multi-function switch (usually on the steering column). The circuit of the intermittent wiper periodically activates a relay that closes across the "Wiper On" switch. Your intermittent wiper circuit is likely defective and holding its relay closed (or the relay is stuck closed), thereby keeping the wipers on. Note: The wiper motor has an internal switch that opens when the wipers are in the park position and that is designerd to stop the wipers in the park position. When you turn on the wipers (or the intermittent relay is closed), the motor's internal switch is shunted such that the wiper does not stop at the park point of the cycle.

Apr 27, 2009 | Ford Explorer Cars & Trucks

2 Answers

Wipers do not work in intermittent position. They do work in low and high speeds but do not automatically return to the park position. They stop wherever you turn the switch off.


i belive that your wiper switch has gone out on the intermittent side. this is a very common problem.
I hope this helps you
Thanks
Please leave rating

Apr 21, 2009 | 2000 Isuzu Amigo

1 Answer

Intermittent/park relay


Should be under the bonnet (hood) where all the fuses & relay's are.

Part should be less than $50

Yes, you should be able to replace it yourself once you have located the correct relay.

Dec 13, 2008 | 1999 Mercury Grand Marquis

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