Blue highway
Well-Known Member
- First Name
- Steve
- Joined
- Oct 15, 2021
- Threads
- 4
- Messages
- 2,133
- Reaction score
- 3,306
- Location
- Oregon
- Vehicles
- Mach E Premium SR RWD
"No reason to expect a performance reduction under normal operation."It may be a large impact in the event of a malfunction. No reason to expect a performance reduction under normal operation. Every throttle-by-wire ICE vehicle on the road will go into a severely reduced power mode if there is a loss of correlation between any of the APP and TP sensors. When all the sensors agree you have full power.
Hell, diesels will derate if you ignore DPF regen requests too many times.
This is why that assumption is completely wrong.
If resistance is detected across the relay, power will be reduced by the software as the resistance generates heat as current passes through... more current = more heat.
The problem with the assumption above is that it assumes, the resistance across the relay will somehow go back to factory original condition and the software will stop limiting power. This will never happen. Once damaged, the the resistance across the relay contacts will never go away. Said differently, once pitting occurs, there is resistance in the connection and the resistance will not go back to where it was before the pitting occurred. The only way to remove the resistance from the pitting, is to open up the hermetically sealed relay and clean the contactors... or replace the relay all together.
Otherwise, the software will protect the relay by limiting current... but the software will never give original power because once damage occurs, the contactor is permanently damaged... it does NOT heal its self.
Performance will be reduced permanently until the relay is replaced. THIS is why the software "fix" alone is unacceptable.
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