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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Navigation, iDrive, Audio, Video, Bluetooth, Phone, Cameras, Electronics > Heads-up display made for short people?
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      11-06-2017, 04:51 PM   #1
SecretAsianMan
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Heads-up display made for short people?

Forgive the sarcastic subject. It looks like it's probably some sort of calibration issue, but in my new-to-me '14 335i xDrive the heads up display image gets cut off at the top unless I hunch down. In settings I can adjust the image height, but it moves the image around inside of the "cut off window" and moving it up just makes it cut off even easier.

I'm not especially tall or anything, but it looks like I either need to be really short or have my seating position slammed to the ground to see the whole heads up display.

Looked in the manual to no avail. Is there some procedure for calibrating the heads-up display projector angle?
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      11-06-2017, 06:10 PM   #2
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Quote:
Originally Posted by SecretAsianMan View Post
Forgive the sarcastic subject. It looks like it's probably some sort of calibration issue, but in my new-to-me '14 335i xDrive the heads up display image gets cut off at the top unless I hunch down. In settings I can adjust the image height, but it moves the image around inside of the "cut off window" and moving it up just makes it cut off even easier.

I'm not especially tall or anything, but it looks like I either need to be really short or have my seating position slammed to the ground to see the whole heads up display.

Looked in the manual to no avail. Is there some procedure for calibrating the heads-up display projector angle?
Don't think so. You are limited by the location of the screen material in-bedded in the windshield. you can only move the display around within that limit.
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      11-06-2017, 06:16 PM   #3
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Originally Posted by Orion4 View Post
Don't think so. You are limited by the location of the screen material in-bedded in the windshield. you can only move the display around within that limit.
Exactly; or you can raise your seat It is limited in range....

Love the member name too - SecretAsianMan (singing it in my head now lol)
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      11-06-2017, 07:28 PM   #4
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There is no screen material in the windshield, it's a projector on the dashboard shooting up. I was hoping there would be a way to tilt the angle of the projector.

I don't know how anyone could use this if they're over about 5'6....
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      11-07-2017, 01:11 AM   #5
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I don't know how anyone could use this if they're over about 5'6....
With all due respect, learn to adjust your seat properly.

Apparently you are used to driving in a truck.
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      11-07-2017, 12:23 PM   #6
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Quote:
Originally Posted by SecretAsianMan View Post
There is no screen material in the windshield, it's a projector on the dashboard shooting up. I was hoping there would be a way to tilt the angle of the projector.

I don't know how anyone could use this if they're over about 5'6....
I have absolutely no issue with adjustments and I'm 6'1"

Per the 2013 BMW F30 Owners manual:
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      11-07-2017, 12:34 PM   #7
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Quote:
Originally Posted by SecretAsianMan View Post
There is no screen material in the windshield, it's a projector on the dashboard shooting up. I was hoping there would be a way to tilt the angle of the projector.

I don't know how anyone could use this if they're over about 5'6....
There *is* an area of reflective material in the windshield that allows you to see the HUD; otherwise the display would be "shooting out" into outer space with nothing to stop it.

That's why there is a different (and much more expensive) replacement windshield for HUD equipped cars.

I'm six feet tall. My wife is 5'4". The HUD works just fine for both of us when the seat and display (which change with driver profiles) are properly adjusted.
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      11-07-2017, 02:58 PM   #8
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Seems like something's gotta be misaligned on mine. The only way to see the whole image in the HUD is to crouch down until your eyes are barely over the steering wheel.

The windshield is just a regular windshield with a dielectric film, the windshield is not rocket science. It relies on angle of incidence exceeding brewster's angle to reflect into the cabin, which is why it you can't see it with some polarized sunglasses (depending on angle of polarization). It's expensive because of market forces.

So it's clear that something is wrong with the alignment on mine. Anyone with a service manual know how to calibrate this thing?
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      11-07-2017, 03:49 PM   #9
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Quote:
Originally Posted by SecretAsianMan View Post
Seems like something's gotta be misaligned on mine. The only way to see the whole image in the HUD is to crouch down until your eyes are barely over the steering wheel.

The windshield is just a regular windshield with a dielectric film, the windshield is not rocket science. It relies on angle of incidence exceeding brewster's angle to reflect into the cabin, which is why it you can't see it with some polarized sunglasses (depending on angle of polarization). It's expensive because of market forces.

So it's clear that something is wrong with the alignment on mine. Anyone with a service manual know how to calibrate this thing?
Did you buy your car from a dealership? if so, take it in to be addressed. I don't find anything in the Bentley's about accessing, removing or physically adjusting the HUD unit. I suspect it is pretty much of a fixed position when bolted in. There is definitely something amiss with yours.
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      11-07-2017, 03:49 PM   #10
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Quote:
Originally Posted by SecretAsianMan View Post
Seems like something's gotta be misaligned on mine. The only way to see the whole image in the HUD is to crouch down until your eyes are barely over the steering wheel.

The windshield is just a regular windshield with a dielectric film, the windshield is not rocket science. It relies on angle of incidence exceeding brewster's angle to reflect into the cabin, which is why it you can't see it with some polarized sunglasses (depending on angle of polarization). It's expensive because of market forces.

So it's clear that something is wrong with the alignment on mine. Anyone with a service manual know how to calibrate this thing?
Take your left hand, reach for the seat adjustment, lower your seat.

Calibration complete.
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      11-07-2017, 04:20 PM   #11
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Quote:
Originally Posted by SecretAsianMan View Post
Anyone with a service manual know how to calibrate this thing?
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      11-07-2017, 05:24 PM   #12
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Quote:
Originally Posted by kabrichx View Post
Take your left hand, reach for the seat adjustment, lower your seat.

Calibration complete.
The seat would have to sit about 6 inches below the floor pan for this to work.
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      11-07-2017, 05:24 PM   #13
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Quote:
Originally Posted by Orion4 View Post
Did you buy your car from a dealership? if so, take it in to be addressed. I don't find anything in the Bentley's about accessing, removing or physically adjusting the HUD unit. I suspect it is pretty much of a fixed position when bolted in. There is definitely something amiss with yours.
Thanks! Appreciate the helpful response.

Yep guess back to the stealership on this one.
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      11-07-2017, 08:35 PM   #14
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Quote:
Originally Posted by SecretAsianMan View Post
The seat would have to sit about 6 inches below the floor pan for this to work.
Quote:
Originally Posted by Orion4 View Post
Did you buy your car from a dealership? if so, take it in to be addressed. I don't find anything in the Bentley's about accessing, removing or physically adjusting the HUD unit. I suspect it is pretty much of a fixed position when bolted in. There is definitely something amiss with yours.

If the unit was projecting that far off on the windshield, it would not work as it would miss the reflective area designed to show the HUD Display and you would see nothing.

So again, lower your seat.

Nothing the Dealership can do.
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      11-07-2017, 11:41 PM   #15
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Seat is bottomed out, and I'm not a tall guy - image cut off. There is no "reflective area designed.." on the windshield, the whole thing is coated in a dielectric coating, edge to edge.

Not sure how much clearer I can be on it without sounding like an asshole. Next-gen surface relief grating optics is part of my career path and I can tell you with great certainty that the issue is a miscalibrated projector. I'm asking if anyone knows the dealer procedure for calibrating it because I'd rather not spend the money.
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      11-08-2017, 07:37 AM   #16
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Plenty of members have tried to help and still it is not going through.

Take it to the dealer and stop sounding like an...

Quote:
Originally Posted by SecretAsianMan View Post
Seat is bottomed out, and I'm not a tall guy - image cut off. There is no "reflective area designed.." on the windshield, the whole thing is coated in a dielectric coating, edge to edge.

Not sure how much clearer I can be on it without sounding like an asshole. Next-gen surface relief grating optics is part of my career path and I can tell you with great certainty that the issue is a miscalibrated projector. I'm asking if anyone knows the dealer procedure for calibrating it because I'd rather not spend the money.
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      11-08-2017, 12:56 PM   #17
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Got some helpful replies (thanks!), got some clueless-dipshit replies. I appreciate the attempts to help from those that did.

Called dealer. They said it's a common problem if the projector unit gets bumped during windshield replacement and there's a procedure to calibrate it.
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      11-08-2017, 01:00 PM   #18
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Surprised no one mentioned it, but if you're taller then you need to adjust the HUD down, not up. I have my seat all the way down and have had to bump the HUD down some after driving as I get used to the seating position. Plus there are small crosshairs in the corner to let you know when it is aligned properly. You shouldn't need a dealership for this one.
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As long as 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      11-18-2017, 04:27 PM   #19
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you can adjust the HUD up and down as well as rotating it. I had a similar problem and fixed it that way.
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