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Ask Jared D Your Own Question
Jared D
Jared D, ASE Certified Technician
Category: Lincoln
Satisfied Customers: 1698
Experience:  Shop Supervisor at County Fleet
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System has "gone crazy"...without a prompt, it increases or

Customer Question

system has "gone crazy"...without a prompt, it increases or advances to HI and I can't adjust it without turning it completely off. Suggestions?
JA: What is the model/year of your Lincoln?
Customer: 2014 MKS
JA: Are you fixing your MKS yourself? What have you tried so far?
Customer: Nothing excepting turning the temperature off and resetting the air to the temperature to my desired degree
JA: How many miles are on the car? Have you checked the coolant level?
Customer: 80,000 ...No I haven't checked the coolant level...What should it be to work properly?
JA: Anything else you want the mechanic to know before I connect you?
Customer: No Thanks
Submitted: 9 days ago.
Category: Lincoln
Expert:  Jared D replied 8 days ago.

Good morning,

Most likely what you are seeing is an internal temperature sensor fault that makes the automatic AC system think it needs to run full blast to cool the vehicle off.

Do you have access to a scan tool to diagnose the sensors?

Expert:  Jared D replied 3 days ago.

Please let me know if you need additional info