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EricFromCT
EricFromCT, Ford Lincoln Mercury Senior Master
Category: Mercury
Satisfied Customers: 3521
Experience:  ASE, Ford Lincoln Mercury Senior Master, Diesel, Kia Professional Elite
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How to reset-fix failsafe mode 0n 05 mountaineer 4.0 L

Customer Question

how to reset-fix failsafe mode 0n 05 mountaineer 4.0 L
Submitted: 1 year ago.
Category: Mercury
Expert:  EricFromCT replied 1 year ago.

Hi. I understand you already disconnected the battery. But can you please try to remove both battery terminals, and touch the two terminals together to drop any remaining voltage. Then reconnect to the battery. Let me know how that goes.

Expert:  EricFromCT replied 1 year ago.

Otherwise if the codes keep returning, then you have a hard fault somewhere causing them.

Customer: replied 1 year ago.
The engine failsafe mode still on
Customer: replied 1 year ago.
Are you available?
Expert:  EricFromCT replied 1 year ago.

Hi. I am available now.

Expert:  EricFromCT replied 1 year ago.

Can you recheck which codes came back with a scanner? If the codes are coming back then something is currently not reading right. Such as the throttle body, or wiring.

Expert:  EricFromCT replied 1 year ago.

Hi. Have you rechecked the codes? Have you made progress?

Customer: replied 1 year ago.
I DECIDE TO REPLACE TPS AND THAT FIX IT, THANK YOU ANYWAY, MERRY CHRISTMAS!
Expert:  EricFromCT replied 1 year ago.

Ok awesome. You are welcome. Glad you got it running. Please rate my service and have a great Holiday also!