I just Took my 2020 Ford explorer for the same thing AWD Module not communicating. Dealer said it would need to be replaced. estimate $980 i got a call from dealer and they said " good news" the AWD module came way down in price $118.01 now so i saves a few bucks.... it SHOULD BE UNDER POWERTRAIN WARRANTY !!! but anyways I did a google search of the part number L1MZ-7P238-A and the AWD Module is $58.00 now.... Just wanted to share with the group
Do you know what codes you have?
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I'm new to this particular forum seeing several similar threads on here, and it seems there are a couple of different issues giving similar warning messages in the cluster. In some instances the actual trouble codes may or may not be listed, and I think that's the key to figuring this stuff out. I also realize not everyone has a means of pulling the codes.
For a 2020 Platinum my mother owns I'm trying to diagnose the following codes: U102F, U0102, U0146, U011D, U0100, and U0418 pulled using FORScan.
These codes are accompanied by the following messages in the cluster "4WD Fault Service Required," "Hill Start Assist Not Available," "Service Advance Trac," "Pre-Collision Assist Not Available," and "Reverse Brake Assist Not Available See Manual" (when shifted into reverse).
I didn't see that OP had posted his codes either but there is a different TSB 23-2061 (attached) out there that isn't getting a lot of press that I can see. This revision was issued late Feb 2023 and it calls for splicing in a body ground wire to the ground circuit (Pin 46) at the TCCM connector under the driver's seat. It mentions all of my codes and the cluster messages so I feel like it might be a better alternative than replacing TCCMs. It also looks like there's potential for the TCCM to lose it's case/body ground through the three mounting studs/nuts. See WaferTech's Post #84 in this thread:
https://www.explorerst.org/threads/4wd-fault-service-required.3964/page-5. I can't find a copy of the superseded TSB 21-2386 to know what procedure/repair parts changed, when it originally came out, etc. I'll go out on a limb here, but what if some of these TCCMs that have been replaced were perfectly fine and just had a poor case/body ground. Then once a new module was bolted down (and programmed accordingly of course) the case/body ground was restored? Something to thing about especially since the revised TSB adds a new body ground directly to the wiring harness.