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ACC/Pilot Assist Modification precautions
#4
(07-11-2023, 03:08 PM)Power6 Wrote: Yeah this is a known risk. AFAIK any car with the "conventional" brake system (it has a BCM and not a BCM2) if it does not have PA/ACC from the factory, the ABS hydraulic unit is supposed to be replaced, with a different specific part for PA/ACC. This is what Volvo requires when the factory "Intellassist" accessory to enable PA/ACC is installed.

You can enable PA/ACC anyways, as you know. It's a personal risk decision. Some have noted strange feelings with the automated braking in this case. I have not noticed myself, but I have not had the opportunity to compare a factory equipped car to an "enabled" car like mine, with the conventional hydraulic brake system.

I have driven a 2019 S90 Inscription and can compare the ACC/PA with my 2019 S60 Momentum that has been "enabled" drove both cars on the same section of road, 20 miles in each direction, and noticed no difference in the way they behaved. both were a bit shaky when there were several crack repairs in the center of the lane or when the road opened to two lanes. The cars braked behind a stopping, slowing, or merging car in the same manner. they also both stopped the same behind another car at a traffic light very similar, I did notice a bit more pulsation of the brakes in my modified S60.

I also got behind the wheel of a 2022 S6 Recharge on the same roads, and it was a totally different experience. Almost all the "new driver" feel was gone. Very little shaking or jerking of the wheel and braking or slowing behind another car was much better. I think that is just improved technology over previous model years.

Again, this is just my experience and how I perceived how the cars behaved, your results may vary.
2019 S60 T6 Momentum
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RE: ACC/Pilot Assist Modification precautions - by DiyEverything - 07-18-2023, 10:00 PM

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