Hi everyone,

I’m new to the forum and currently in the process of purchasing a 2016 Ford F‑150 Lariat, but I’ve run into a number of electrical and driver‑assist warnings that have me a bit concerned. Before I move forward with the purchase, I wanted to reach out to the community to see if anyone has experienced something similar or can offer some guidance.

My initial suspicion is a possible BLIS module issue in the taillights, but I’m not sure if a single fault like that could realistically trigger all of these warnings at once.

Issues / Warnings Displayed

The truck is showing multiple messages on the dash, including:

• Check Locking Differential
• Service AdvanceTrac
• Check Brake System
• Tire Pressure Monitor Fault
• Lane Keeping System Malfunction – Service Required

Warning Lights Currently On

In addition to the messages above, the following warning lights are illuminated:

• Check Engine Light
• Traction Control Light
• ABS Light
• TPMS Light

Additional Notes

• The truck does start, runs, and drives, but the sheer number of system alerts makes me think there may be a single underlying issue rather than multiple unrelated failures.
• I’m wondering if this could be related to something commonly seen on these trucks, such as:
  • A failing ABS module or wheel speed sensor
  • Low battery voltage, weak battery, or alternator issues
  • Grounding or wiring faults
  • Possible previous accident repair or water intrusion
  • Module communication (CAN bus) issues

Given how interconnected these systems are, I’m trying to determine whether this is something relatively minor and fixable, or a larger electrical problem that could turn into an expensive headache after purchase.

 

Never mind. I just searched the VIN and the truck was totaled before.

 

Definitely not worth the headache!

 

I couldn't do it either. That said, many of those faults do occur often with an undercharged battery or one that needs replaced.