How far should a 2003 R170 remote work from? - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

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#1 Old 07-28-2015
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Question How far should a 2003 R170 remote work from?

Hi All,

I have 2 'keys' for my R170, both with new batteries, but they only work remotely about 10ft (3m) or less away from the car. I would love to increase this distance to control my SmartTop from slightly further away. My Honda CRV unlock works from about 30ft (10m).

Can anyone help please?
What is the usual distance?
Can it be increased?

I really don't want the expense of new keys, but something that I can do for a small outlay is possible.

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#2 Old 07-28-2015
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wow, only 10 feet? and rf too. members will jump in.
you have your original whip?

Not to get you jealous but r171 smarttop range is up to 300 feet

https://www.slkworld.com/general-disc...f-picture.html
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#3 Old 07-28-2015
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Mine is pathetic also. About 10 to 15 feet range. Have to be almost right next to it to confirm the doors are locked, and at that point I can just look I'm so close. Pretty pathetic.

My pathfinder remote works from a good 75 feet away anywhere in my house. I love being able to just push a button, hear a chirp and know my truck is locked.
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#4 Old 07-28-2015
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https://www.slkworld.com/slk-r170-cla...0-antenna.html
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#5 Old 07-29-2015
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RF range

Here in New Zealand we have many Japanese import SLK230's. The Japanese spec vehicles have a specific 'short range remote' that only works from about 3m. I don't know if it's actually the remote ,or the receiver that's been 'nobbled', but I'd love to know how to 'undo' that spec.
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#6 Old 07-29-2015
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mine is smooth-skinned

and has no visible antenna. Radio reception can be a bit ropey in the valleys around here. I'm assuming my receiver is somewhere in the bowels of the boot. Any hope for me? ( my remote works from about 10 metres, or 1 metre, depending on how it feels, and angle of approach)
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#7 Old 07-29-2015
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Originally Posted by jbanks15 View Post
wow, only 10 feet? and rf too. members will jump in.
you have your original whip?

Not to get you jealous but r171 smarttop range is up to 300 feet

https://www.slkworld.com/general-disc...f-picture.html
In uk land we did not have a whip aerial on the 170
So the range was very short .
And 10 feet sounds about right as they get older
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#8 Old 07-29-2015
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Hold the remote to your forehead....it DOUBLES the range!
No kidding,try it.
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not forehead, chin!
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#10 Old 07-29-2015
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I heard it works best again'st your butt
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Last edited by jbanks15; 07-29-2015 at 01:48 PM.
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#11 Old 07-29-2015
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I heard it works best again'st your butt
Only if you wear stilletos
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Back on thread topic please
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#13 Old 07-29-2015
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Originally Posted by adrose View Post
Hold the remote to your forehead....it DOUBLES the range!
No kidding,try it.
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Originally Posted by jbanks15 View Post
not forehead, chin!
If you hold the remote higher up (eye level) it works at a greater distance, as opposed to waist level (against your butt)

Do a test, it won't cost you anything
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#14 Old 07-29-2015
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I just found this...


http://www.benzworld.org/forums/r170-slk-class/1280781-slk-radio-aerial-connection.html


I guess that the reason it's so bad is that it needs an active booster to get decent reception, but this is only on when the radio is on. Hence the rubbish operating distance. I'm going to try and find the feed to the radio and take a screened cable to the "parcel shelf" then add a dual 75mm twisted cable to act as a range improver, I may even cut the circuit when the radio is on, with a simple relay, if the radio objects. BUT, I won't have time to look at it for at least 2 weeks!


When I have any news I will post it here...


BTW - I went to Mercedes Benz World at Brooklands today. HIGHLY recommended! The best free day out in the home counties (UK), Get there before 13:00 to see the Silver Arrows, great fun!! The staff are all lovely and the exploded F1 car is the 9th wonder of the world!


Best Regards
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