The Grenadier Forum
Register Now for enhanced site access.
INEOS Agents, Dealers or Commercial vendors please contact admin@theineosforum.com for a commercial account.

Altimeter issues. Reset/Calibration possible?

reauxheaux

Grenadier Owner
Local time
8:35 AM
Joined
Jun 23, 2023
Messages
87
Reaction score
104
Location
New Orleans, LA
View attachment 7841981


These are the current barometric pressure readings for the US.
The Gren altimeter should read about 400 ft low in St Louis and approximately 250 ft high in Seattle right now.
MIUf7c8.gif
 

carlg007

Grenadier Owner
Local time
9:35 AM
Joined
May 18, 2023
Messages
143
Reaction score
181
Location
Florida

Ovrland Bill

Grenadier Owner
Lifetime Supporter
Founding Guard
Local time
6:35 AM
Joined
Sep 25, 2021
Messages
316
Reaction score
340
My Altimeter at least gives me a rough idea of time: I can only make out the displayed value when the instrument lights come on at night🫣
 

Sarven

Grenadier Owner
Local time
9:35 AM
Joined
Jan 31, 2024
Messages
2
Reaction score
1
Location
NJ, USA
Living in New Orleans I expect to see negative numbers, but the city isn't 70' below sea level.

Should be showing around 8-10' above sea level where it sits.

Anyone know of an issue or is this just a limitation of altimeters in vehicles that

Living in New Orleans I expect to see negative numbers, but the city isn't 70' below sea level.

Should be showing around 8-10' above sea level where it sits.

Anyone know of an issue or is this just a limitation of altimeters in vehicles that I have to live with?
I live in NJ having the same issue about 100 ft off
 

Bruce

Global Grenadier #51
Grenadier Owner
Lifetime Supporter
Local time
6:35 AM
Joined
Oct 20, 2021
Messages
893
Reaction score
1,284
Location
Washington, USA
That’s actually a great idea. Ineos should parter with Bremont, CWC, or some other British watch brand. I’ll mention the brand Christopher Ward, but I’m assuming Sir Jim wouldn’t want some other blokes name in this vehicle 😂😂
I'd take IWC, another Mercedes AMG F1 sponsor too.
 

Clark Kent

Grenadier Owner
Lifetime Supporter
Local time
12:35 AM
Joined
Jul 26, 2022
Messages
667
Reaction score
1,686
Location
Toowoomba QLD, Australia
I posted earlier that I think the altitude data is GPS-derived, not atmospheric pressure. Can anyone confirm either way, or is there just a general consensus that it's a pressure instrument because it's labelled Altitude? A GPS error could also show the wrong height because it relies on triangulation between multiple satellites.
 

GrumpyBastard

Grenadier Owner
Local time
9:35 AM
Joined
Aug 7, 2023
Messages
119
Reaction score
141
Location
Colorado, USA
I’m willing to agree that it’s GPS based. There would be no reason to include a pressure instrument. Going to the off road pathfinder page shows the same data. I surmise that people have a similar unrealistic expectation of GNSS-based altitude/elevation figures. Although it’s not “accurate”, I still appreciate the novelty of it in my dashboard versus the branded plug option.
 

TD5-90

Grenadier Owner
Lifetime Supporter
Founding Guard
Local time
3:35 PM
Joined
Aug 22, 2021
Messages
435
Reaction score
912
Location
South Germany
My pre-Grenadier Hyundai Santa Fe had an inbuilt altimeter which was calibrated by GPS. It was an interesting exercise to compare its output with local "Official" elevation markers. Usually within 10-15m of the markers in various east coast locations from Cairns in far north Queensland to Melbourne some 3600 km to the south.
Surf club carpark altitudes varied between -5m and +20m. I haven't a clue what their real elevation was🤷‍♂️ but my feet were dry:cool:
At sea level +/-10m are a lot of error, at 2000m they're nothing. In fact, at 0.0m elevation even 1mm is inf % of error.

But there are people who believe it's best practice to calibrate their barometic altimeters at sea level....

Use common sense when using an altimeter, be it barometric or GPS based: If your're around sea level, common sense reasoning gives your altitude.
 
Last edited:
Local time
9:35 AM
Joined
Nov 25, 2023
Messages
7
Reaction score
8
Location
Corolla, NC, USA
Living in New Orleans I expect to see negative numbers, but the city isn't 70' below sea level.

Should be showing around 8-10' above sea level where it sits.

Anyone know of an issue or is this just a limitation of altimeters in vehicles that I have to live with?
I have the same issue on the outer banks of NC. I’m 105 feet under.
 

Krabby

Global Grenadier 76
Forum Moderator
Grenadier Owner
Lifetime Supporter
Local time
9:35 AM
Joined
Nov 5, 2022
Messages
5,067
Reaction score
9,713
Location
New Jersey, USA
Well we have a potential winner here. lowest reading gets a free mug and t shirt.

It's official competition time.

Entries close on last day of Feb.
limbo belt GIF
 
Back
Top Bottom