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BlendMount Radar detector mount for Tesla Model S

Intense1

Supporting Member
Supporting Member
May 13, 2021
35
24
SoCal
Like many, I have been struggling to find a decent way to mount my radar detector in my Model S and, like many I had used a BlendMount solution on all of my previous vehicles. I did speak with the technical support team at BlendMount to see what the issue was and inquire as to why they didn't offer one and they sent me the following response. (Note: My Model S is a 2016.5 P90DL with AP1 MCU2)

"We do not have a mount that will work on the model S to the best of our knowledge. The reason is that the stem is square and tapered (gets smaller as it goes towards the mirror) causing the mount to end up against the back of the mirror making the mirror not adjustable. We have heard that the new Model S Plaid has the same mirror as the 3 and have a couple of people testing that at the moment."

Fair enough. But then I saw a post on Instagram or Facebook where a Model S owner was using the BlendMount for the Model X and making it work. If you go to the BlendMount website and plug in your vehicle make, model and year, you will see that the Model X is the only selectable option for vehicles 2016 and earlier and Model X and 3 are the only options for 2017 to 2020. The post I saw said it wasn't a perfect fit but it works. At this point I was willing to settle for something less than perfect to get away from the suction cup or that Redenso XP visor clip mod where you clip it to the headliner.

So, I was going to order the BlendMount for the Model X for my Uniden R7 but when I tried to do so it wasn't available for my radar detector. So, I emailed the guys at BlendMount and told them what I was trying to do and they responded as follows:

"I can make one for you. I will add a couple to our sales platform so you can purchase one. If by chance it does not work out you can of course return it for a refund. If it does work out We would love some pictures of your install."

A few minutes later I received an email saying it was 3 available for purchase and I ordered one of them. The model # for the one for my Uniden R7 was BR7-2035 if that's what you have. If you use a different radar detector just go to their website and will in the info for your radar detector and they'll show you which model BlendMount to use.

When I went to install it they were obviously correct about the taper in the mirror arm being problematic. However, while it was in fact tapered, it was not square, it was still round, at least mine was. But, even with the taper it was still manageable.

What I did was trim the rubber padding material that was supplied all the way down to just fit on the narrow but consistent portion of the machined ID of the clamp allowing the tapered opening of the clap to essentially be wider to mimic the tapered OD of the mirror arm. (ref: Photos below)

Then when I slipped it over the arm and started tightening it, it slowly started to slide down the mirror arm toward the ball or mirror pivot point. I kept tightening gently and as it neared the bottom of the arm and ball/pivot point it stopped sliding (the rubber padding kicked in) and it allowed me to tighten firmly in place. I then slid the radar detector into place on the mount and made the adjustments to make it level and pointing in the appropriate direction, etc.

Since I was doing all of this from the passenger's side, once the detector was secured in place I went over to the driver's seat, to see how it impacted the range of motion of the rearview mirror. It did, but only @ 10% of the range but not outside of where it needs to be for me or my wife. I am 6'4" and my wife is 5'6" and we can both still adjust the mirror to suit us. Besides, she never drives my car anyway. :)

So, I am not sure what the mirror stem looks like on the 2017+ Model S (is it square?) but I was able to make this work on my Model S and I am much happier with this mounting application. The guys at BlendMount said they were glad I was able to make it work for me but they had gone through multiple designs and none worked flawlessly or consistently. I agree, it takes some playing with and understand why they can't offer it but I was glad I was able to make the one for the Model X work in my Model S.

Here are some photos from the install:

(BTW, if you are looking for info on how to make the wire tap for 12v switched power, be sure to read this whole thread here.)

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DerbyDave

Active Member
Jul 2, 2020
1,077
629
Kentucky
Doesn't that block your vision to the right? I am tall, and the rearview mirror even blocks some view for me. Also, I have always (since 1980s) had a Valentine One, and used the suction cup mounts at the top of the windshield to the right of the mirror, on all my cars. Never had an issue, and it is more hidden against theft than sitting in the middle of the windshield where it is easily seen. What issues have others found with just using the suction cups that makes people not want to use them?
 

Intense1

Supporting Member
Supporting Member
May 13, 2021
35
24
SoCal
Doesn't that block your vision to the right? I am tall, and the rearview mirror even blocks some view for me. Also, I have always (since 1980s) had a Valentine One, and used the suction cup mounts at the top of the windshield to the right of the mirror, on all my cars. Never had an issue, and it is more hidden against theft than sitting in the middle of the windshield where it is easily seen. What issues have others found with just using the suction cups that makes people not want to use them?
No, not really. I'm 6'4" and I have had a BlendMount in my Jaguar, C6 Camaro, C6 Corvette, C7 Corvette, Audi S5 and Mercedes SL550 which is why I was perplexed when I found out they didn't have them for the Tesla.
 
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brycerocky

Member
Nov 8, 2017
39
10
Santa Clara
Darn, was super excited to see your updates, since I wanted to mounted my R7 the same (have it mounted in my other cars with blendmounts). However, noticed you have AP1, which has a different shape than my 2017 AP2.5. I had gotten the same response from BlendMount as you originally did when I inquired.
 

CBGPE

Supporting Member
Supporting Member
Jan 15, 2020
20
28
SPRING VALLEY
What I am doing is using a typical articulating suction cup mount for my Valentine 1 but mounting it to the back of the main user interface and powering it off the power point. Yes I know the unit is upside down but it is nicely tucked away and the wires can be tucked away as well. I will let you know what it is like to live with. Since I have a Plaid and had 12 v system issues I don't want to connect into the wiring and will power up off the power point for now.
 

Intense1

Supporting Member
Supporting Member
May 13, 2021
35
24
SoCal
S
Darn, was super excited to see your updates, since I wanted to mounted my R7 the same (have it mounted in my other cars with blendmounts). However, noticed you have AP1, which has a different shape than my 2017 AP2.5. I had gotten the same response from BlendMount as you originally did when I inquired.
So is your mirror arm square?
 

Intense1

Supporting Member
Supporting Member
May 13, 2021
35
24
SoCal
What I am doing is using a typical articulating suction cup mount for my Valentine 1 but mounting it to the back of the main user interface and powering it off the power point. Yes I know the unit is upside down but it is nicely tucked away and the wires can be tucked away as well. I will let you know what it is like to live with. Since I have a Plaid and had 12 v system issues I don't want to connect into the wiring and will power up off the power point for now.
Pictures?
 

CBGPE

Supporting Member
Supporting Member
Jan 15, 2020
20
28
SPRING VALLEY
What I am doing is using a typical articulating suction cup mount for my Valentine 1 but mounting it to the back of the main user interface and powering it off the power point. Yes I know the unit is upside down but it is nicely tucked away and the wires can be tucked away as well. I will let you know what it is like to live with. Since I have a Plaid and had 12 v system issues I don't want to connect into the wiring and will power up off the power point for now.
I have a machine shop. When we get a chance I am going to make a flat plate to mount to the suction cup device and put Velcro on the plate and on the bottom of the Valentine to make it sit right side up.
 

SailorDave

Member
Dec 7, 2016
130
191
McKinney, TX
What I am doing is using a typical articulating suction cup mount for my Valentine 1 but mounting it to the back of the main user interface and powering it off the power point. Yes I know the unit is upside down but it is nicely tucked away and the wires can be tucked away as well. I will let you know what it is like to live with. Since I have a Plaid and had 12 v system issues I don't want to connect into the wiring and will power up off the power point for now.
Do you have it mounted by the mirror as heard our new Model S (I have a LR coming this week) had a metallic windshield and it needed to be mounted in lower right corner (as per manual showing location for Toll Tags)? I would much prefer it by the mirror if it is working well without range issues.
 

CaliPlaid

Member
Sep 5, 2021
8
1
Sacramento, CA
I’ll follow this thread. I have a 2021 Model S Plaid and a brand new, Escort Redline 360c in the box just waiting to be mounted. After reading this, I fired off an email to Blendmount to ask if my mirror is the same as the Model 3. I’ll keep you posted on my end as well. I’ll also ask my installer what he thinks about the power and it turning off with the car and on with the car.

So we are all in agreement that there is no film on the windshields of the new Model S that would stop the range?
 

TessP100D

Member
Jan 15, 2018
435
297
La Quinta, Ca
Doesn't that block your vision to the right? I am tall, and the rearview mirror even blocks some view for me. Also, I have always (since 1980s) had a Valentine One, and used the suction cup mounts at the top of the windshield to the right of the mirror, on all my cars. Never had an issue, and it is more hidden against theft than sitting in the middle of the windshield where it is easily seen. What issues have others found with just using the suction cups that makes people not want to use them?
I use the V-1 detector and suction cups. Works perfect.
 
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CBGPE

Supporting Member
Supporting Member
Jan 15, 2020
20
28
SPRING VALLEY
My staff machined up a simple piece of 3/16 lexan and threaded it for the suction cup mount and used 4 small pieces of Velcro on the bottom of the valentine to mount it to the lexan plate.
It works perfectly and the suction cup holds nicely on the back of the display.
 
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Reactions: TessP100D
Oct 10, 2019
440
220
So-Cal
How does it work in that location? I had to get an external mount radar detector (whistler pro-3700) and mounted it to the bumper behind the nose cone.
Also i know some cars have a spot for mounting things like fastpass things but i was under the impression that was at the top of the windshield not the middle of it.

And yeah my car is a 2014 so things change but if they finally got rid of that damn metallic coating crap i may have to get a new windshield installed. I have tried with my old Valentine 1 in all locations on there in a lowes parking lot and it gets 1 dot in all areas but if i open the sunroof and hold it up i get max bars signal so its def getting blocked.
 

TessP100D

Member
Jan 15, 2018
435
297
La Quinta, Ca
How does it work in that location? I had to get an external mount radar detector (whistler pro-3700) and mounted it to the bumper behind the nose cone.
Also i know some cars have a spot for mounting things like fastpass things but i was under the impression that was at the top of the windshield not the middle of it.

And yeah my car is a 2014 so things change but if they finally got rid of that damn metallic coating crap i may have to get a new windshield installed. I have tried with my old Valentine 1 in all locations on there in a lowes parking lot and it gets 1 dot in all areas but if i open the sunroof and hold it up i get max bars signal so its def getting blocked.
Should have bought a V1. They have it all figured out for the front Tesla windshield. Mine works perfect
 

phaphaphooey

Member
Mar 26, 2018
108
52
USA
I wonder if there is a way to route the power cord better so it isn't just hanging there. Otherwise excellent pioneering work. I plan to order one if I can figure out something better to do with the power cord. Maybe drilling a small hole in the plastic cover by the switched power for the rearview? With the blendmount the RD is literally only a few inches from the switched power in the rearview, it is a shame to route the wire all the way up to the headliner only for it to come all the way back down and hang there.
 

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