Used HCU won't accept new VIN
#1
Used HCU won't accept new VIN
I have an Escape Hybrid 2007, and live in Baja. My HCU failed (no brakes at all), so my mechanic installed a used HCU in my escape, but says he gets an error where the HCU is associated with another VIN number.m
Is this true, and is there a way to fix this or a work around anyone knows of?
Is this true, and is there a way to fix this or a work around anyone knows of?
#2
Re: Used HCU won't accept new VIN
He will need to use Ford IDS software to enter the correct VIN and As-Built data into the replaced HCU module. This will need to be done before the PCM will recognize the HCU and for him to be able to perform the bleed process.
#3
Re: Used HCU won't accept new VIN
Just so I can tell the mechanic, is this done with the HCU connected to the car, or outside of the car?
#4
Re: Used HCU won't accept new VIN
He needs to do the programming with the module installed in the vehicle.
He will need to have the Ford IDS software and a VCM to connect to the vehicle.
He will also need the as-built data for the ABS/HCU when the vehicle left the factory.
If he is versed in the IDS he can inhale the as-built data from the original module and exhale it into the module after he installs it.
After he installs the module he will need to use IDS to do the brake bleeding which is a very long and problematic process.
He will need to have the Ford IDS software and a VCM to connect to the vehicle.
He will also need the as-built data for the ABS/HCU when the vehicle left the factory.
If he is versed in the IDS he can inhale the as-built data from the original module and exhale it into the module after he installs it.
After he installs the module he will need to use IDS to do the brake bleeding which is a very long and problematic process.
#5
Re: Used HCU won't accept new VIN
He needs to do the programming with the module installed in the vehicle.
He will need to have the Ford IDS software and a VCM to connect to the vehicle.
He will also need the as-built data for the ABS/HCU when the vehicle left the factory.
If he is versed in the IDS he can inhale the as-built data from the original module and exhale it into the module after he installs it.
After he installs the module he will need to use IDS to do the brake bleeding which is a very long and problematic process.
He will need to have the Ford IDS software and a VCM to connect to the vehicle.
He will also need the as-built data for the ABS/HCU when the vehicle left the factory.
If he is versed in the IDS he can inhale the as-built data from the original module and exhale it into the module after he installs it.
After he installs the module he will need to use IDS to do the brake bleeding which is a very long and problematic process.
It appears that the salvaged HCU I ordered was dropped by UPS and may have been damaged.
I am in the process of ordering another HCU, possibly a brand new one.
My mechanic told me today, that using the Ford IDS he was unable to get any communication from the salvaged HCU. I think this is normal until it's flashed appropriately as per what you have written?
#6
Re: Used HCU won't accept new VIN
Even if it was not programmed when he installed it in the vehicle and did a network test he should have gotten a B2900 VIN mismatch and a U2023 External node error which would have been because he had not yet loaded the as-built data and vehicle VIN into the module.
#7
Re: Used HCU won't accept new VIN
Thank you very much for this information. I have a much better idea of the process now.
It appears that the salvaged HCU I ordered was dropped by UPS and may have been damaged.
I am in the process of ordering another HCU, possibly a brand new one.
My mechanic told me today, that using the Ford IDS he was unable to get any communication from the salvaged HCU. I think this is normal until it's flashed appropriately as per what you have written?
It appears that the salvaged HCU I ordered was dropped by UPS and may have been damaged.
I am in the process of ordering another HCU, possibly a brand new one.
My mechanic told me today, that using the Ford IDS he was unable to get any communication from the salvaged HCU. I think this is normal until it's flashed appropriately as per what you have written?
#9
Re: Used HCU won't accept new VIN
Once the HCU is replaced you will need Ford IDS software to enter the VIN and as-built data. Then you will need to perform a power bleed which is the only way to purge the air out of the system.
From my limited experience most of the HCU issues are related to the soft hoses at each caliper and not the HCU.
From my limited experience most of the HCU issues are related to the soft hoses at each caliper and not the HCU.
#10
Re: Used HCU won't accept new VIN
Please elaborate on your observation with the flexible hoses. I have replaced deteriorated flexible hoses on conventional braking systems. The deterioration is internal, only visible by cutting the hose open.
I am examining an Escape Hybrid whose HCU failure symptoms on the dash and in brake failure appear after some amount of driving (heat related?). Are you recommending replacement of the hoses before replacing the HCU?
The used parts vendors on ebay are ambiguous regarding HCU vs ABS system modules, partly because it says "ABS" on the module. I have these identifiers:
motor: 7M64-2C555-AA
DE ABS U293
A426G
ATE 25.1201-0013.4
What is the best identifier to use to insure I'm buying the right part?
thanks!
I am examining an Escape Hybrid whose HCU failure symptoms on the dash and in brake failure appear after some amount of driving (heat related?). Are you recommending replacement of the hoses before replacing the HCU?
The used parts vendors on ebay are ambiguous regarding HCU vs ABS system modules, partly because it says "ABS" on the module. I have these identifiers:
motor: 7M64-2C555-AA
DE ABS U293
A426G
ATE 25.1201-0013.4
What is the best identifier to use to insure I'm buying the right part?
thanks!