I’ve had two temporary power assist / steering failures about a year apart on my June 2017 S75D now at nearly 160,000 miles. On the first it just disappeared. But then after sitting for an hour, it was back, for months.
Recently, it disappeared but then seemed to come back slightly, then, after sitting, it was fine again.
I assume the units are sealed and not serviceable, because decades ago, with these symptoms, I would have suspected the fluid was low, checked and refilled it.
One strategy is to wait until it happens again, then see if the failures are getting more frequent. But if someone else is driving when it happens, that could be bad.
To replace it is only $405 in labor but the whole assembly is $3305. And if I’m going to replace it, since my car is pre the AP2.5 redundant power steering addition, I’d really like the upgrade.
My service advisor thinks I have part…
1060801-00-E
…and would normally replace it with newer part…
1070801-00-F
…but if Tesla will let him install it, he thought this part may be the HW2.5 redundant setup…
1459637-00-A
…but I was told here that the 145* part is a model 3 part, not the updated model S part, assuming there is one. And yet I see more evidence that the 145* part is a really older S part and that the 107* part shows up in the catalog as supporting the APH3 (HW2.5) and APH4 (HW3) so maybe the newest, either with that redundant power supply or at least compatible with it.
Anyone familiar with these parts? Anyone know where the control wires for that unit originate and whether there are two sets for HW2.5? It would be great if there is only one wire and the redundancy is handled internal to the unit.
Recently, it disappeared but then seemed to come back slightly, then, after sitting, it was fine again.
I assume the units are sealed and not serviceable, because decades ago, with these symptoms, I would have suspected the fluid was low, checked and refilled it.
One strategy is to wait until it happens again, then see if the failures are getting more frequent. But if someone else is driving when it happens, that could be bad.
To replace it is only $405 in labor but the whole assembly is $3305. And if I’m going to replace it, since my car is pre the AP2.5 redundant power steering addition, I’d really like the upgrade.
My service advisor thinks I have part…
1060801-00-E
…and would normally replace it with newer part…
1070801-00-F
…but if Tesla will let him install it, he thought this part may be the HW2.5 redundant setup…
1459637-00-A
…but I was told here that the 145* part is a model 3 part, not the updated model S part, assuming there is one. And yet I see more evidence that the 145* part is a really older S part and that the 107* part shows up in the catalog as supporting the APH3 (HW2.5) and APH4 (HW3) so maybe the newest, either with that redundant power supply or at least compatible with it.
Anyone familiar with these parts? Anyone know where the control wires for that unit originate and whether there are two sets for HW2.5? It would be great if there is only one wire and the redundancy is handled internal to the unit.
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