Tips for using Porsche Intelligent Range Manager

[TDinDC]

I am hoping others can help explain the best way to use Porsche Intelligent Range Manager (PIRM).

Coming home to DC from Philly yesterday, I was running both Waze via CarPlay and PCM navigation with PIRM.

Following a horrific charging experience (my first in over a decade of owning EVs), I decided to use Range mode and departed with only 20 miles buffer to get home to my home charger (which was absolutely fine, as I arrived with 34 miles to spare).

The problem I started running into is that, unexpectedly, Porsche InnoDrive (PID) would change my preset speed of 85 mph down to 55 mph. This is of course disturbing because the car rapidly slows down without warning. The work around is that I would switch off range mode so that I could retain my desired preset speed of 85 mph.

At first, I couldn't understand why this was happening, but then I realized that the navigation must have been setting a new destination for a charger given my level of charge, and then reducing my speed to conserve charge. I could go back in and reset my destination to my home and then I could go back to Range mode and my preferred speed (85 mph), but it would then switch the destination back.

Short of turning off PIRM (which I don't think I want to do because I want to retain the battery pre-conditioning), does anyone have any suggestions on changes to settings to address this? Can you designate your house as an exception or as a charging destination (for me only as it would be a disaster if a bunch of Taycan owners started showing up for a charge)?

Thanks

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[Tooney]

If you are using Porsche Charging Planner, and have a DC fast charger as the next stop in a route, battery pre-conditioning will occur.

PIRM - Porsche Intelligent Range Planning - is a different, optional function. It essentially recommends a "better" alternative route in range mode to choose when you enter a destination in the nav unit.

Once you choose a route, it is the Porsche Charging Planner that handles pre-conditioning, and may generate new or different DC chargers as you proceed along your route and SoC is reduced.

You can turn off Porsche Charging Planner, but not PIRM.

I think the problem you are experiencing is related to Innodrive and the charging planner, but since I don't have PID, I can't provide info about that.

I have PIRM, but when I look at the range mode options it suggests, I never choose them because they do not seem to be much better than normal mode.

In the PCM for charging planner, you can set the minimum SoC that the planner will use before it adds a DC charger destination. Or, what I do when I am heading home and don't care if SoC gets low, deactivate the charging planner. That stops it adding new charge stops.

 

[TDinDC]

If you are using Porsche Charging Planner, and have a DC fast charger as the next stop in a route, battery pre-conditioning will occur.

PIRM - Porsche Intelligent Range Planning - is a different, optional function. It essentially recommends a "better" alternative route in range mode to choose when you enter a destination in the nav unit.

Once you choose a route, it is the Porsche Charging Planner that handles pre-conditioning, and may generate new or different DC chargers as you proceed along your route and SoC is reduced.

You can turn off Porsche Charging Planner, but not PIRM.

I think the problem you are experiencing is related to Innodrive and the charging planner, but since I don't have PID, I can't provide info about that.

I have PIRM, but when I look at the range mode options it suggests, I never choose them because they do not seem to be much better than normal mode.

In the PCM for charging planner, you can set the minimum SoC that the planner will use before it adds a DC charger destination. Or, what I do when I am heading home and don't care if SoC gets low, deactivate the charging planner. That stops it adding new charge stops.

Thank you. That would make sense, but you see that my destination was actually my personal residence. This is why it was so annoying that navigation would automatically reset my destination for a charger location . . .

 

[Tooney]

Thank you. That would make sense, but you see that my destination was actually my personal residence. This is why it was so annoying that navigation would automatically reset my destination for a charger location . . .

Turn off the charging planner on the way home when you expect low SoC, or reduce the mininum SoC in charging planner.

 

[Tooney]

 

[TDinDC]

I do think that the issue I was experiencing was related to PIRM because, at least according to the manual, PIRM adjusts all of these things only while you are in Range mode, which was the only mode in which I was having the problem of it resetting my speed.

I think you may be on to something about my setting for minimum charge (I didn''t even know mine), but mine too was at 25%, which was higher than the range I would have had upon arrival at my home. I noticed that it turns yellow if you set it at 15% or below, so I reset mine for 17%.

I attached the PIRM section from the manual, as it is, shockingly, not all that helpful.

 

[Watchesandburgers]

Separate from PIRM, verify the InnoDrive setting for speed limit detection.

 

[TDinDC]

Separate from PIRM, verify the InnoDrive setting for speed limit detection.

Absolutely. I found this out during my first week of ownership. PID is, in my opinion, unusable until you deselect the “obey detected speed limits” option!

 

[gtm]

I am hoping others can help explain the best way to use Porsche Intelligent Range Manager (PIRM).

Coming home to DC from Philly yesterday, I was running both Waze via CarPlay and PCM navigation with PIRM.

Following a horrific charging experience (my first in over a decade of owning EVs), I decided to use Range mode and departed with only 20 miles buffer to get home to my home charger (which was absolutely fine, as I arrived with 34 miles to spare).

The problem I started running into is that, unexpectedly, Porsche InnoDrive (PID) would change my preset speed of 85 mph down to 55 mph. This is of course disturbing because the car rapidly slows down without warning. The work around is that I would switch off range mode so that I could retain my desired preset speed of 85 mph.

At first, I couldn't understand why this was happening, but then I realized that the navigation must have been setting a new destination for a charger given my level of charge, and then reducing my speed to conserve charge. I could go back in and reset my destination to my home and then I could go back to Range mode and my preferred speed (85 mph), but it would then switch the destination back.

Short of turning off PIRM (which I don't think I want to do because I want to retain the battery pre-conditioning), does anyone have any suggestions on changes to settings to address this? Can you designate your house as an exception or as a charging destination (for me only as it would be a disaster if a bunch of Taycan owners started showing up for a charge)?

Thanks

Porsche has a lot of work to do with the whole software aspect of using a Taycan. I have a possible explanation of what was going on during your drive. I have PIRM and PID. Several times I have been headed home and knew I would make it with 20+/- miles to spare. My min on arrival is set to 20% (what I consider a safe minimum on a road trip). The car kept adding a charging stop which was necessary to get me home at 20% or above. In your case you probably wouldn't have made it to the charger (the new next stop) with 25% so the car adjusted your speed (this is a function of PIRM, I think, as it will adjust settings if in range mode). Preconditioning sucks up a lot of electrons so add that to the calculation and I think PIRM decided your max speed should be 55mph. Reset everything go back into range mode and the PIRM does it all over again. It should not be this hard to understand how the systems work and have to input some workaround all the time. You want navigation, know you can make your destination but the car, rather than make a suggestion, just goes ahead and changes settings on you. It all works, but damn is it frustrating some times.

I hope someone can tell me I'm wrong but I have found no way to set "home" as a destination where PIRM will ignore the general min arrival charge level.

 

[TDinDC]

Porsche has a lot of work to do with the whole software aspect of using a Taycan. I have a possible explanation of what was going on during your drive. I have PIRM and PID. Recently I was headed home and knew I would make it with 20 miles to spare. My min on arrival was set to 20% (what I consider a safe minimum on a road trip). The car kept adding a charging stop which was necessary to get me home at 20% or above. In your case you probably wouldn't have made it to the charger (the new next stop) with 25% so the car adjusted your speed (this is a function of PIRM, I think, as it will adjust settings if in range mode). Preconditioning sucks up a lot of electrons so add that to the calculation and I think PIRM decided your max speed should be 55mph. Reset everything go back into range mode and the PIRM does it all over again. It should not be this hard to understand how the systems work and have to input some workaround all the time. You want navigation, know you can make your destination but the car, rather than make a suggestion, just goes ahead and changes settings on you. It all works, but damn is it frustrating some times.

Yup. That sounds exactly right, and that is exactly what is annoying about it. Also, you are driving at 85 mph and it is incredibly distracting to have your car slow down unexpectedly and then have to deal with everything immediately because pressing the accelerator has zero impact -- you must switch out of range mode. Once you know, you know, but the first time is confusing and the manual is near to useless. Porsche should do a better job of explaining how all of these assistant "components" work (i.e., specific actions they will take and under what circumstances).

 

[Tooney]

I don't understand using range mode while driving 85 mph. 85 mph is going to hurt range, not help it.

Seems like setting thermostat on home AC very low in hot summer temperatures while keeping doors and windows open.
What am I missing?

 

[TDinDC]

I don't understand using range mode while driving 85 mph. 85 mph is going to hurt range, not help it.

Seems like setting thermostat on home AC very low in hot summer temperatures while keeping doors and windows open.
What am I missing?

Think of it the other way: If you want to go 85 mph, then why wouldn't you want to optimize all of the other settings to offset the impact of speed as much as possible?

From Porsche:

"Range mode
The Taycan Cross Turismo performs particularly efficiently in Range mode. Top speed is limited to an adjustable maximum of between 90 and 140 km/h but this can always be overridden by depressing the accelerator pedal. Selecting this mode means that the all-wheel-drive system will distribute power in the most efficient manner possible. In extreme cases, the Taycan Cross Turismo will even be powered exclusively via the front axle. The cooling air flaps and ride height (22 mm lower) are adjusted for minimum drag. Air conditioning, hydraulic pumps, air suspension and headlights also operate in their most efficient configurations."

I'm most definitely not a hyper miler, but I don't mind the low ride height and other efficiency settings for range mode, and it tends to keep me on the milder side with the better angels than the company I much prefer to keep . . .

Also, in reality, 85 is just the setting for PID . . . most of the time there is traffic that the car is following. My average speed on the way up was only 35 mph, and my average speed on the way back was 40 mph, and that was almost all on interstate apart from a very brief time to go to and from Georgetown to canal to 495 to 95 and on the other end to and from Rittenhouse Square and 95, which is not much in town driving at all.

 

[W1NGE]

Thank you. That would make sense, but you see that my destination was actually my personal residence. This is why it was so annoying that navigation would automatically reset my destination for a charger location . . .

Did you have a minimum charge at destination set, if so then the car will be wanting to charge before arrival?

 

[TDinDC]

Did you have a minimum charge at destination set, if so then the car will be wanting to charge before arrival?

Yes thanks. See posts 9 and 10. GTM got it right and explained why it’s so frustrating.

 

[Tooney]

Think of it the other way: If you want to go 85 mph, then why wouldn't you want to optimize all of the other settings to offset the impact of speed as much as possible?

From Porsche:

"Range mode
The Taycan Cross Turismo performs particularly efficiently in Range mode. Top speed is limited to an adjustable maximum of between 90 and 140 km/h but this can always be overridden by depressing the accelerator pedal. Selecting this mode means that the all-wheel-drive system will distribute power in the most efficient manner possible. In extreme cases, the Taycan Cross Turismo will even be powered exclusively via the front axle. The cooling air flaps and ride height (22 mm lower) are adjusted for minimum drag. Air conditioning, hydraulic pumps, air suspension and headlights also operate in their most efficient configurations."

Porsche's list of the Taycan's most efficient configurations sounds impressive, but when PIRM suggests range mode nav route alternatives for my long trips, the estimated time savings (travel and charging) to arrive at destination with same SoC as normal mode is always very small.
PIRM itself doesn't give much value to all those 'most efficient configurations'.

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