Auto-down windows with keyless remote
Thread Starter
Almost a Member!
Joined: Oct 2004
Posts: 46
Likes: 0
From: Mississauga, ON, Canada
2005 C230 sedan w/ Bixenon, auto tranny, sunroof, garage opener, rain-sensing wipers, black on black
Auto-down windows with keyless remote
Hey guys, I have a 2005 C-class. I haven't had any major problems so far. It has about 7400 kilometers, and I got it in November 2004. One thing that's bothering me is the fact that I was told that if I hold down the unlock button on my remote, all windows and sunroof should open, and when I hold the lock button, they should all close again. Well, I tried holding unlock for a good 30 seconds, and no luck. nothing happened. I even tried holding the lock button for a while, and nothing. What could be wrong?
Thread Starter
Almost a Member!
Joined: Oct 2004
Posts: 46
Likes: 0
From: Mississauga, ON, Canada
2005 C230 sedan w/ Bixenon, auto tranny, sunroof, garage opener, rain-sensing wipers, black on black
Originally Posted by OnLun9
you have to point your remote to the "sensor thing" beside your door handle.
I'm at school right now, and will be going to the car in about an hour. Can it be from a distance, or do I have to stand right next to the door to do it? I was always under the perception that on a very very hot day (I used to live in the Middle East), one would be able to open all windows and sunroof from a good distance away for ventilation, so by the time the person gets to the car, all the extreme heat has gone out. I've even seen that on BMWs. They can do it from a distance. Is there a purpose to having that sensor and not being able to open from a distance in this case?
Senior Member
Joined: Sep 2004
Posts: 315
Likes: 2
From: Orlando, FL
2008 E350
Originally Posted by hkalltheway
I'm at school right now, and will be going to the car in about an hour. Can it be from a distance, or do I have to stand right next to the door to do it? I was always under the perception that on a very very hot day (I used to live in the Middle East), one would be able to open all windows and sunroof from a good distance away for ventilation, so by the time the person gets to the car, all the extreme heat has gone out. I've even seen that on BMWs. They can do it from a distance. Is there a purpose to having that sensor and not being able to open from a distance in this case?
Hope this helps.
GGM
Out Of Control!!
Joined: Nov 2001
Posts: 10,067
Likes: 11
From: Westwood, NJ
2004 Civic Si. FWD for the Win!
You have to be close. It's still better on a hot day than getting in, and opening up them normally.
If yours still don't work, you may need to re-snych the windows and sunroof.
If yours still don't work, you may need to re-snych the windows and sunroof.
MBWorld Fanatic!
Joined: Oct 2002
Posts: 7,737
Likes: 1
From: San Diego, Ca
2003 Citron Green C230KMT
ive noticed you cant be too close either. leave a couple inches distance. also remember, on 2005 there is no IR sensor on the passenger door. so you have to be on the driver side of the car.
MBWorld Fanatic!
Joined: Nov 2001
Posts: 2,465
Likes: 0
From: SF Bay Area
2002 C230 K
Originally Posted by hkalltheway
I was always under the perception that on a very very hot day (I used to live in the Middle East), one would be able to open all windows and sunroof from a good distance away for ventilation
Trending Topics
Admin Alumni
Joined: Nov 2001
Posts: 8,143
Likes: 19
See Garage
You can get further away, but the IR beam from the remote is very narrow, so you have to aim it just right at the sensor or it won't work. 10-12 feet away (3-4 meters) is about the maximum distance away that you can use this feature on my car. Maybe 20 feet (6 meters) with perfect aim, but who wants to draw a bead down the remote with one's eye on the parking lot?
A cute parlor trick, but essentially-useless if you thought you could open the windows from across the parking lot. I use it mostly when I get out of the car, lock it, then realise a window or sunroof is open.
BTW, this feature uses the IR side of the key, while the door locking/unlocking uses the RF transmitter, so it functions from much further away. I would have been happier if the window down/up feature worked on the RF, as well.
A cute parlor trick, but essentially-useless if you thought you could open the windows from across the parking lot. I use it mostly when I get out of the car, lock it, then realise a window or sunroof is open.
BTW, this feature uses the IR side of the key, while the door locking/unlocking uses the RF transmitter, so it functions from much further away. I would have been happier if the window down/up feature worked on the RF, as well.
MB World Stories
The Best of Mercedes & AMG
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke
Verdad Gallardo
8 Mercedes Models With Poor Reliability Records
Verdad Gallardo
Administrator
Joined: Sep 2002
Posts: 15,762
Likes: 36
From: www.Traben-Trarbach.de
MPG+ ROLFCOPTER
Originally Posted by hkalltheway
I'm at school right now, and will be going to the car in about an hour. Can it be from a distance, or do I have to stand right next to the door to do it? I was always under the perception that on a very very hot day (I used to live in the Middle East), one would be able to open all windows and sunroof from a good distance away for ventilation, so by the time the person gets to the car, all the extreme heat has gone out. I've even seen that on BMWs. They can do it from a distance. Is there a purpose to having that sensor and not being able to open from a distance in this case?
Originally Posted by trench
Actually, I've noticed that since it's an IR sensor it doesn't work from as far away on a hot day or in bright sunlight.
Hold the key up to the correct side of your temple on the side of your head. Press the corresponding button that initiates the function you want to activate. This will then allow your brain cavity to amplify the signal. the reason for this will be the added electrical impulses generated by your thinking processes. Remember to think real hard. HTH
Admin Alumni
Joined: Nov 2001
Posts: 8,143
Likes: 19
See Garage
I'll have to try that one again myself, Andy, but I recall that the IR beam doesn't work on the resonance principle as the RF side does.
And you're joking about thinking really hard. The RF signal DOES amplify off the bony structures in your head, like your temple or your jawbone. Works the same way that a dolphin projects its sonar signal in the ocean (through it's lower jaw)
The IR side doesn't work as well during very sunny days simply because the aim has to be perfect for the sensor in the door to distinguish the threshold difference in the IR beam from the overwhelming ambient light already present. Doesn't have anything to do with ambient temperature, unless you've left the remote in the direct sunlight and the batteries are overheated.
And you're joking about thinking really hard. The RF signal DOES amplify off the bony structures in your head, like your temple or your jawbone. Works the same way that a dolphin projects its sonar signal in the ocean (through it's lower jaw)
The IR side doesn't work as well during very sunny days simply because the aim has to be perfect for the sensor in the door to distinguish the threshold difference in the IR beam from the overwhelming ambient light already present. Doesn't have anything to do with ambient temperature, unless you've left the remote in the direct sunlight and the batteries are overheated.
Super Member
Joined: Sep 2004
Posts: 503
Likes: 0
From: Manchester, TN
2004 C320 pewter/charcoal
Although in theory this feature would be beneficial, the distance you have to be at to activate it essentially means you're right there to then open the door and still be subject to the high heat inside. Would have been so much better to have it work while the car is in visual range to open it and have some time for the heat to disappate. Also, in my 2004 model, IR appears to be only on the driver's side so if I approach it from the other side (which more times than not I end up doing) it won't work from the passenger side.
Also it takes holding down the button for a decent amt of time before it takes effect (and at that range, might as well open the door and vent out the heat that way).
Not the smartest designed system in my opinion.
Also it takes holding down the button for a decent amt of time before it takes effect (and at that range, might as well open the door and vent out the heat that way).
Not the smartest designed system in my opinion.
Out Of Control!!
Joined: Nov 2005
Posts: 18,677
Likes: 9
From: OC
a quarter mile at a time
Originally Posted by jugdishoh1
Although in theory this feature would be beneficial, the distance you have to be at to activate it essentially means you're right there to then open the door and still be subject to the high heat inside. Would have been so much better to have it work while the car is in visual range to open it and have some time for the heat to disappate. Also, in my 2004 model, IR appears to be only on the driver's side so if I approach it from the other side (which more times than not I end up doing) it won't work from the passenger side.
Also it takes holding down the button for a decent amt of time before it takes effect (and at that range, might as well open the door and vent out the heat that way).
Not the smartest designed system in my opinion.
Also it takes holding down the button for a decent amt of time before it takes effect (and at that range, might as well open the door and vent out the heat that way).
Not the smartest designed system in my opinion.
Senior Member
Joined: Dec 2005
Posts: 258
Likes: 1
From: redondo beach, ca
2005 C230 SS
yea it works only sometimes on my car too. and u have to be pretty close for it to work, so its kinda useless since u gonna get in the car almost right away.but i do use it when i forget to close the sunroof and i close it as i lock the car. but yes it would have been much better if it worked at the same distance as the lock/unlock mechanism
Senior Member
Joined: Jun 2003
Posts: 322
Likes: 5
From: Albany, NY
2015 C350 Coupe
remote window open
I was at a friends house and his brother wanted to see the car. I opened the windows and roof w/ the key to show him the inside. This way I didn't have to open the doors. Also great on a summer day when the car is parked in my driveway and I want to cool it down while inside my apartment.
Just my 2 cents, but I like the feature.
Just my 2 cents, but I like the feature.
Super Member
Joined: Sep 2004
Posts: 503
Likes: 0
From: Manchester, TN
2004 C320 pewter/charcoal
Originally Posted by e1000
um - you dug up this thread to say that?
How else am I going to maintain my blazing post rate of 276 (now make 277) posts in under 2 yrs?
And instead of starting a new thread regarding this topic, I actually did STFF!
Out Of Control!!
Joined: Nov 2005
Posts: 18,677
Likes: 9
From: OC
a quarter mile at a time
Originally Posted by jugdishoh1
How else am I going to maintain my blazing post rate of 276 (now make 277) posts in under 2 yrs?
And instead of starting a new thread regarding this topic, I actually did STFF!
And instead of starting a new thread regarding this topic, I actually did STFF!
