have a 2016 F150 Lariat 3.5L Ecoboost with around 50k miles. 2 days ago I had a warning light pop up stating my drivers side blind spot monitoring system quit working. This occurred after I just started the car and still in a parking lot. Later that day, when I started the truck, the same problem happened but also various electrical components that would not work. These included the front automatic windows, the drivers/passenger airbag, the entire climate control panel, the buttons to control the infotainment screen, and the automatic windows. The issue did not happen at all the next day when the vehicle was driven twice approx 15 minutes each time. Today however after approximately 10 minutes of driving all those electrical failures would occur and have not gone away. I have had no issues with this truck previously. I took it to an auto parts store and checked the OBD and put the codes at the bottom of this post. I am very knowledgeable in vehicle repair or maintenance. Do all of these electrical systems hook up to a single fuse or computer or switch or whatever? I have tried searching for this issue on the forum and couldn't find anything. Any advice would be greatly appreciated.

OEM Enhanced KOEO
P193E-00 (A/C) clutch request signal

OEM Enhanced Continuous memory DTCs
U0164-00 CM|Indeterminate Lost communication with (HVAC) control module
P193E-00 CM|Indeterminate (A/C) clutch request signal


Ford SRS
U0557-82 CM|Current/MIL Invalid date received from front controls interface module - alive/sequence counter incorrect/not updated
B00D5-01 CM|Current/MIL Restrain passenger disable indicator - General electrical failure
B1202-01 CM|Current/MIL Restraint system passenger enable indicator - General electrical failure

 

Just had one on a 2018... check your taillights... connector is probably green... it take the whole ms can network down...

 

There has to be more codes since you said the problem started with the BSM yet there are no BSM codes listed. U codes are communication codes and it seems like there is a problem with the modules accessing or communicating on the truck's network. The body control module would be a major module that the other ones would be communicating with.

 

There might have been. I have never used a code reader before and all they would do is hand it to me. So, I did the best I could to figure out the different menu options. So many abbreviations. When you say "modules" what are you referring to?

 

I can look into that. I have had some condensation/fluids in my rear drivers side taillight assembly but it has always been there since I purchased the truck. It has never increased or decreased. What is a ms can network?

 

Medium speed network..let's just say a bunch of stuff runs on it... when it's acting up., disconnect tail lamps and see if things start working again.. check tail lamp connectors for green death

 

Thanks I've spent the last 15 minutes reading about CANs. Are the tailights/BSMs on the same CAN as the climate control and all the other systems that seem to be failing?

 

Modules are computers. There are many modules (computers) in the truck. Just like other computers they communicate on a network; like how your computer accesses servers around the world to communicate on the internet. The truck has it's own internal network that all of it's computers communicate with each other on. For instance when you remote start your truck the BCM receives the signal and ensures all the doors and hood are closed and locked. It hen talks to the PCM to start the engine. The PCM then checks multiple systems to ensure the truck is ready to start if they all report ready it engages the starter. After the engine starts the PCM reports to the BCM that the engine start was successful and the BCM then communicates to the light control module to turn on the parking lights to visually let you know that the engine has been started.

All of that is done in seconds because of the network.

 

You were right, kind of, I think, at least so far. the connector to my taillights looked great which was a bit of a surprise. There was a fair amount of water in the taillight assembly. I couldn't reproduce the malfunctions with the taillights disconnected. I removed the blind spot monitor sensor and the connection had corrosion and was wet. I removed and cleaned it. So, I think that was the issue. So weird that when that was faulting so many other systems would go in/out.

 

I am having the same issue. Did you ever figure this out?