99 slk keyless entry during remote start

i installed a clifford matrix 3.5 in a 1999 mercedes slk230. everything is working well except the keyless entry will not work during remote start. you have to manually use the key to unlock the doors. i tapped into the door lock/unlock wires at the keyless entry module behind the gauges. would it work if i connect it to the wire in the kick panel?

Well according to what I see you can use either location. Did you meter the wires while turning the key to be sure they were correct?  Failing that I guess you could try the kick panel.

no,i didn't meter the wire while turning the key.

keyless entry works at all times except for when the car is remote started.

i think i should have it checked out while manually started and see if the car unlocks. for some reason, i don't think it will work because it is probably a mercedes feature. since the car had a factory alarm, i had to put 12 volts to the keysense wire during remote start and i think that makes the car think the key is already in the ignition so why do you need to unlock the car with the keyless entry.

i'm wondering if anyone else did this car or a similar one and had this problem and how they fixed it.

Power Lock	black	-	driver kick panel or
Notes: Also found at the keyless receiver behind the instrument cluster. These are the driver door key cylinder wires. Meter wires while turning the key in the driver door to lock and unlock the doors.
Power Unlock	blue	-	driver kick panel or
Notes: Also found at the keyless receiver behind the instrument cluster. These are the driver door key cylinder wires. Meter wires while turning the key in the driver door to lock and unlock the doors.

you don't need key sence

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how own your mind, control your life.
MECP certified. always use a DMM

don't need keysense? hmm, i thought the stock alarm armed/disarmed with lock/unlock? will i have to unlock before remote starting or do i just not have to worry about the alarm triggering during remote start?

boomer - i don't think i asked a question about the door triggers.

i'm still fairly new at this and i guess the keysense wire does different things on different cars. i recently did a 05 toyota sequoia and if i did not make the car think the key was in the ignition at the time of remote start, the factory alarm would trigger. in this system, the factory alarm was also controlled by the door lock/unlock.

i guess i just kinda assumed the same would apply here. the wiring diagram i got didn't even list a keysense wire... i just found it on my own. i guess in this situation, i just did too much thinking. haha.

thanx for the replies guys. i welcome any more replies and i will post the results after i check out the car on thursday.

Ah sorry. Not sure what I was thinking. I read alot of posts so who knows. I'm interested to see what you finally come up with.

You will have to go to the motor wires for the lock & unlock if the keyless is disabled during remote start sequence.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

velocity - i was thinking that too but that means i have to get into the door, right? if i do that, i have to 5-wire the motor wires right? is anything different with motor wires for a vacuum door lock system?

you won't be able to find wires on a vacuum door lock motor.....there's no motor. it's just an air tube connected to a mechanism leading to your lock pin and the actual lock itself. i have yet to work on this car, so my info may not be so accurate. here's some stuff you can try:

1. since you say that you've found the factory keyless module behind the instrument cluster, test the wires at that module to see if any of them are +12v with ignition "on". if yes, then what would happen if you were to cut it? does the keyless entry work then with the ignition on? if this solves the problem simply open up that wire with a relay to be triggered on during remote start.

2. while the ignition is on, do the pwr door locks work if you use the key itself in the door's keyhole? ie. does the other door and the trunk unlock? try this from both doors. if yes, you should be able to get the trigger wires that lead from the keyhole to trigger your pwr locks to work.

3. look for the vacuum pump. it's likely to be in the trunk. it's not unusual to be able to find wires on the pump itself to trigger it to push or pull. will it work with the ignition on? is there a wire leading into it that is +12v with ignition on?

btw. this is a bit off topic, but does your slk have the smart key....the one that's not really a key, just an infra-red thing (i thought most mercedes starting from around 98 had the smart key)? how did you make it remote start if it has the smart key?


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all problems can be resolved with a hammer

jimmeez,

1. i'll check the keyless entry module for this wire you speak of that might exist.

2. while the car is in remote start mode, i am able to use the key in the keyhole to unlock the door. i understand what you are saying here and i need to find that wire that triggers the vaccuum pump regardless of the ignition status.

3. i've seen the mechanism in the trunk. is it a vacuum pump only for the doors or does it control the vert top also? i'll also look for the door lock/unlock wires here as well but i'd rather not run wires that far because it was kinda a pain in the ass to do this for the trunk pin.

off-topic: this 99 slk uses RF as opposed to infrared. i was able to bypass it by using the 556u

i just hope that if i remove the keysense wire that i connected, everything works. that's the easiest solution by far.

first of all... this was a pain in the ass.

- the power unlock wire (WHITE/ green) located below the stereo controls the doorlocks during ignition but it does not control the door locks after the ignition has been turned off.

- therefore, you have to connect the unlock of the alarm to both the GREEN / WHITE wire under the stereo AND the blue wire @ the keyless entry module. this covers all possibilities of when you need to unlock the car.

- it was a pain because i assumed the WHITE/ green wire controlled power unlocks at all times. it works after you enter the car and before you start the car. it also works when the car is running. it ceases to work after the ignition is turned off. i didn't realize this until after i put everything back together.

- i found the blue wire in the kick panel that i metered and found that it corresponded with turning the key in the keyhole. however, this wire wouldn't let me unlock the door during ignition either.

- i could not find the door unlock wire in the trunk near the vaccuum pump.

- you gotta take the stereo out in order to access 2 screws that allow you to take off the front panel to access the back of the button.

Factory Alarm Arm	arms with lock
Factory Alarm Disarm	disarms with unlock

as you see lock arms the alarm that you have to do is sends a pulse to unlock to dissarm the alarm and then send an pulse to lock to relock the car or some alarms has a feature that after remote started it locks it self.

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how own your mind, control your life.
MECP certified. always use a DMM