MEM_ERR03 after an interupdated MAP install

I tried to update my maps from F13 to the updated F13 (2024) release.

I set off on a 1.5-hour journey this morning. Part 1 of the installation started normally, but then SYNC displayed the message asking me to perform a key cycle. I couldn’t stop immediately, so I continued driving while the system carried on updating.

When I reached my destination, I switched the car off, assuming this would count as the key cycle. I returned to the car about an hour later, and SYNC reported that Part 1 was complete and Part 2 would now begin.

However, Part 2 only runs for around 10 minutes before failing with:

Installation Failed – Error code: MEM_ERR03

Troubleshooting so far:

  • Performed a master reset.

  • Removed Gracenotes using Syn3 Updater (after generating the interrogator log below).

  • Retried the official Ford USB update, but it failed with the same error.

VIN: WF0FXXWPM
APIM Model: NU5T-14G371-GAF
APIM Type: Navigation
APIM Size: 64GB
APIM Free Space: 9.0G
Version 3.4.26057 (NU5T-14G381-AE)

16/10/2026 15:24:31 +00:00

Partition Type = Free / Total
/fs/sd/MAP/ = 976K / 1.2G
/fs/sd/MAP/ = 15M / 3.0G
/fs/sd/MAP/ = 14M / 2.4G
/fs/sd/MAP/ = 7.8M / 1.6G
/fs/sd/MAP/ = 17M / 2.4G
/fs/sd/MAP/ = 26M / 3.7G
/fs/sd/MAP/ = 312K / 41M
/fs/sd/MAP/ = 4.9M / 3.4G
/fs/sd/MAP/ = 27M / 3.4G
/fs/Nuance/ = 29M / 5.0G
/fs/Nuance/ = 30M / 5.2G
/fs/Nuance/ = 27M / 4.6G
/fs/Nuance/ = 38M / 3.9G
/fs/Nuance/ = 8.4M / 1.9G
/fs/Nuance/grace = 21M / 1003M
/fs/rwdata/ = 967M / 1.2G
/fs/rwdata/quip/ = 35M / 35M
/fs/rwdata/quip/ = 90M / 90M
/fs/mp/ = 84M / 1.4G
/fs/mp/resources = 332K / 72M
/fs/images/ = 9.0G / 54G

Installed Packages
1U5T-14G421-BAM
1U5T-14G421-BBM
1U5T-14G421-BCM
1U5T-14G421-BDM
1U5T-14G421-BEM
1U5T-14G421-BFM
1U5T-14G421-BGM
1U5T-14G421-BHM
1U5T-14G421-BJM
1U5T-14G658-AH
4U5T-14G422-BAM
4U5T-14G422-BBM
4U5T-14G422-BCM
4U5T-14G422-BDM
4U5T-14G423-AC
5U5T-14G391-AT

1U5T-14G424-BP

APIM AsBuilt
DE00: 8A6A01CA50023E040082
DE01: 554B010EC2025C90ACB08E05
DE02: 0007000000
DE03: 00000680250102
DE04: 18061810295F
DE05: 20
DE06: 17003300000000A17500005656790088

This isn’t causing any ongoing problems, as SYNC and navigation still work normally, but it’s frustrating that the installation won’t complete.


SYNC Region: EU

Navigation Variant: Nav

Manufacturer Year: MY20

Install Type: OEM

Old SYNC Version: 3.4.26057

New SYNC Version: 3.4.26057

Do you have a error message, if so what is it?
MEM_ERR03

Update Method: Official Ford

I originally downloaded this map update in August, but today was my first journey long enough to let the installation run.

I’ve since checked Ford’s website, which now says both SYNC and maps are up to date. I also connected the car to Wi-Fi and checked for updates; SYNC reported that no updates were required - leaving me with no way to download a fresh ford file, or equally upload a log file if it did complete.

Could the Wi-Fi check have sent any status information back to Ford, making the website report the update as complete? Or does the website simply show that my existing SYNC and map versions are current?