How to replace the Flasher Relay unit on the Mercury Mariner?

This method is only for 2004 and earlier models. After that, there is a Smart Junction Box in the car. The dealer service department will need to diagnose the problem with this. Besides, both turn signals work through one electronic flasher unit installed under the instrument panel. Rapid flashing on one side of the turn signal indicator shows that a bulb has burnt out. If this does not happen, it could be because of a blown fuse, faulty flasher unit, broken switch, or loose connection. When it is necessary to change the flasher, it should be taken out from its mounting bracket first and then disconnected from its electrical connector. Before installing a new flasher compare an old one with it.

Genuine Mercury Mariner Flasher Relay

Turn Signal Flasher

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5 Flasher Relays found

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Mercury Mariner Turn Signal Flasher
Part Number: 5L5Z-13350-AA
$26.16 MSRP: $42.36
You Save: $16.20 (39%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Relay - Direction Indicator; Flasher, Flasher Relay, Relay, Turn Signal Flasher
- Replaces: F67Z-13350-AA, F67Z-13350-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2011 Mercury Mariner | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 4 Cyl 2.5L Duratec (110kW/150PS), 4 Cyl 2.5L PFI Gas/Electric, 6 Cyl 3.0L DOHC EFI Modular, 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Mercury Mariner Direction Indicator Relay
Part Number: F65Z-13350-AA
$30.20 MSRP: $48.91
You Save: $18.71 (39%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Relay - Direction Indicator
- Replaced by: 5C3Z-13350-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2006 Mercury Mariner | 4 Cyl 2.3L Hybrid Gas/Electric DOHC | CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Mercury Mariner Direction Indicator Relay
Part Number: F67Z-13350-BA
$26.16 MSRP: $42.36
You Save: $16.20 (39%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Relay - Direction Indicator
- Replaced by: 5L5Z-13350-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2006 Mercury Mariner | 4 Cyl 2.3L Hybrid Gas/Electric DOHC | CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive
View related parts
Mercury Mariner Flasher
Part Number: YL8Z-13350-AA
$129.72 MSRP: $209.09
You Save: $79.37 (38%)
Product Specifications
- Other Name: Relay - Direction Indicator; Flasher
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2006 Mercury Mariner | 4 Cyl 2.3L, 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, 5-Speed Manual Transmission, 5-Speed Manual Transmission - AK, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)
View related parts
Mercury Mariner Direction Indicator Relay
Part Number: YL8Z-13350-BA
Product Specifications
- Other Name: Relay - Direction Indicator; Flasher
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2006 Mercury Mariner | 4 Cyl 2.3L, 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, 5-Speed Manual Transmission, 5-Speed Manual Transmission - AK, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)

Mercury Mariner Flasher Relay

The Mercury Mariner Flasher Relay is designed to keep the driver safe by rhythmically supplying power to the blinkers so that other traffic will know when your vehicle is going to turn or stop in the case of an emergency. The first Mercury models contained a thermal Flasher Relay that was mechanically driven. Current ran through a spring steel strip, heating the metal to bend it. This bending opened and closed the circuit. A clicking noise was produced along with a steady on-off pulse sequenced in this way at each corner. Over time, versions of the Mercury Mariner began using a solid state electronic Flasher Relay, which replaced moving parts with transistors and timing chips. This enabled these flashers to operate reliably with low draw LED lamps and with multiple bulbs without relying on heat. The compact design of each Flasher Relay allows it to sit in the fuse box, which comes to life the moment the lever moves. Contemporary owners of a Mercury Mariner enjoy a unit that responds to stimuli faster, resists wear better, and is even able to reproduce that vintage click sound to provide feedback to the driver. Every Mariner depends on a correctly matched Flasher Relay to ensure the signal and hazard lights stay flashing whenever the stalk is engaged.

We provide a wide range of Mercury Mariner Flasher Relay at the optimal prices. If you need Mercury Mariner Flasher Relay, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your doorstep with a fast delivery service.

Mercury Mariner Flasher Relay Parts Questions & Experts Answers

Flasher
YL8Z-13350-AA
Q:
How to replace the Flasher Relay unit on the Mercury Mariner?
Posted by Jabes G.
A:
This method is only for 2004 and earlier models. After that, there is a Smart Junction Box in the car. The dealer service department will need to diagnose the problem with this. Besides, both turn signals work through one electronic flasher unit installed under the instrument panel. Rapid flashing on one side of the turn signal indicator shows that a bulb has burnt out. If this does not happen, it could be because of a blown Fuse, faulty flasher unit, broken switch, or loose connection. When it is necessary to change the flasher, it should be taken out from its mounting bracket first and then disconnected from its electrical connector. Before installing a new flasher compare an old one with it.
Answered by Ford Parts Specialist John / Sep 11, 2025