Okay, I got this to work in my '92 190E! I bought this Omega keyless entry module for roughly $30 shipped. I then had the seller send me a DLS-V ($18/shipped), which is a pair of relays wired together and designed to plug into the Omega module. Once the module and DLS-V are connected, there are only 4 wires to connect! Here are the instructions...



Here is what it looks like before you put it into the car...



This is so simple, it's scary! It worked the first time I tested it! I did have to adjust the module to send out a longer lasting signal.

Will this disarm a factory alarm also? This is looking like a very attractive option.

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Steven Harrison

1993 300E2.8 - 196K
2001 E320 4MATIC - 86K

Thread bookmarked! I have been wanting to do this recently and now with it sub $100...I may actually go ahead next paycheck!

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

I don't have the alarm, so i have no idea.

WHen you use the unlock mechanism to unlock the doors, when the driver's door unlocks, it will disarm the alarm, or so I have been told. My alarm does not trigger when I use my unlock key fob I installed.

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red

I understood that disarming the alarm and unlocking the doors were two separate things.

My old driver's door lock (for instance) would unlock the doors, but not disarm the alarm when unlocked with the key (a uniquely annoying experience sometimes).

My concern with this method is that the car will be unlocked, but the alarm will still go off when you try opening the door.

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Steven Harrison

1993 300E2.8 - 196K
2001 E320 4MATIC - 86K

Congrats on your Omega unit!

Anyone had success with this unit: http://cgi.ebay.com/ebaymotors/KEYLESS-ENTRY-FOR-MERCEDES-BENZ-300D-190D-300SL-190E_W0QQitemZ260190394466QQihZ016QQcategoryZ33723QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

No relays needed? Going to get one of these soon!

That would be my concern too!

Just my two cents...my vac pump is running slower each month, I figure soon it will give out and the door locks will stop unlocking and I will need a pump. This said, when the car is locked and the alarm is on....I can unlock the car at the trunk and open the trunk before the vac pump has operated enough to build pressure to unlock the doors. So, basically, I walk to the car, unlock the car at the trunk and can open the trunk before the vac actuator at the trunk or the doors activates and unlock the car byt he central unlock system. Not a big deal right now, because a few seconds after I open the trunk the vac system kicks in and all the doors and the fuel door and the trunk unlock vac acctuator operate and everything unlocks. Only issue is this...since the central vac system has not operated and the trunk is open, the trunk pin that triggers the alarm closes when the trunk lid opens and the alarm goes off. Like it should..except I used the key as i am supposed to....why does the alarm go off? Only thing I can see is because the disarm arm action is in the door lock. I open the trunk, the doors are all still locked waiting on the vac pump to build pressure casue it is dying and the alarm goes off, then a second or two later the vac pump opens the doors locks and the alarm shuts it self off. The alarm shuts off due to the vac pump opening the door locks. DOnt know what exactly it is doing it with, but the action that shuts off the alarm is my vac pump unlocking the doors, not me unlocking or opening the trunk...SO, by using an unlocking module that triggers the vac pump to unlock the doors, you will by proxie, disarm the alarm in the process...At least that is what is occuring in my 190E .

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red

More pics of my install...

Thanks you so much! You are the best!!! I will install one in my car very soon.

Here's a diagram of my install...



I cut the green wire, which is the passenger door lock signal wire, but you could cut the blue, which is for the driver's door.

Finally, installed Omega Rec-43T keyless entry in my 1991 190E 2.3. It is easy to install. Thanks Costanza!

Only one stupid question. Unlock is no problem, but when lock it.... It seems delay. I need to hold the lock buttom few seconds, then the door will lock. Do I need to adjust it? Also, it seems only work within four feets around the car. Do I made mistake during installation?

Anyone has the same problem on it?

You probably need to adjust the Omega unit to send the signal for a longer duration. Mine has a little dial you insert a tiny phillips screwdriver into. It goes from 1/10 sec. to 30 sec. Your unit's directions should tell you how.

Did you un-wrap the antenna lead? I have mine going from the unit mounted near the pump, to the driver's side of the car.

I give you guys credit for this DIY project. I considered this DIY project but opted to buy the VIPER 211 keyless system for my 1989 300E at Best Buy at let them install it. System included horn activation, flashing lights and a panic alarm too. It was more expensive but worth it to me. It was a challenge for them since my system was the older vacuum system, not electronic. Good luck to the DIY's!