2008 Forscan Questions

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J Ski

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Well that took me from about 6mph down to to 2mph over. Gonna try a gps calculation option now to see where that gets me
 

17LimitedExpy

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Got it to work just now. Got a value of 0620 for option 1 values of 35-11.50-20

So you didn’t download it? The reason I’m asking is because I changed the permission of the Google sheet and I’m trying to limit what fields people can change...trying to avoid any accidental mess up of the data.
 

J Ski

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So you didn’t download it? The reason I’m asking is because I changed the permission of the Google sheet and I’m trying to limit what fields people can change...trying to avoid any accidental mess up of the data.
Oh sorry. I did download it. I was able to change the first two blocks in option one to my tire size and it gave me a readout. Did not mess with “gps option” yet, however I may give that a try to see if I can get closer to actual mph
 
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briandye

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I will be getting my MS/HS switchable OBDII dongle tomorrow, so I can mess with this stuff. I will be trying to adjust the tire size to get a more accurate speedo (35's now) and im really wanting to get TPMS off. I get an error message every 3rd or 4th time I drive for more than 20 or so minutes, and it drives me nuts. Don't really have extra money to throw at the system hoping new sensors would fix whatever the issue may be.
 

J Ski

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I will be getting my MS/HS switchable OBDII dongle tomorrow, so I can mess with this stuff. I will be trying to adjust the tire size to get a more accurate speedo (35's now) and im really wanting to get TPMS off. I get an error message every 3rd or 4th time I drive for more than 20 or so minutes, and it drives me nuts. Don't really have extra money to throw at the system hoping new sensors would fix whatever the issue may be.
Use the gps option to recalibrate on spreadsheet. Tire size option didn’t do anything. Gps option got me within 1mph of accuracy
 

17LimitedExpy

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Use the gps option to recalibrate on spreadsheet. Tire size option didn’t do anything. Gps option got me within 1mph of accuracy

So the GPS option did work for you?

Also, realize option one is geared more for similar tire sizes as found on the vehicle...I believe you were making a significant tire change, correct?
 

J Ski

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So the GPS option did work for you?

Also, realize option one is geared more for similar tire sizes as found on the vehicle...I believe you were making a significant tire change, correct?
Yes gps worked
 
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briandye

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I do not have the 726-45-01 line. My second line of numbers after 726 only goes up to 24.

I am in the GEM/SJB as built.

Modules I have:
ABS
RCM
IC
SDARS
DCSM
RETM
DSM
PAM
and GEM/SJB

I did successfully turn TPMS off. Gem/SJB:
726-02-01
xx4x to xx0x

Drove around (45-50mph for 3-5 minutes) with one of my tires at 20psi and no warning. Let’s see if the fault pops up tomorrow on my way to work!
 

J Ski

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I do not have the 726-45-01 line. My second line of numbers after 726 only goes up to 24.

I am in the GEM/SJB as built.

Modules I have:
ABS
RCM
IC
SDARS
DCSM
RETM
DSM
PAM
and GEM/SJB

I did successfully turn TPMS off. Gem/SJB:
726-02-01
xx4x to xx0x

Drove around (45-50mph for 3-5 minutes) with one of my tires at 20psi and no warning. Let’s see if the fault pops up tomorrow on my way to work!
That’s bc you don’t even have the BCM module. You get a reader with both MS and HS CAN?
 

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