If its mercedes w203 разболтовка the risk of chancing your luck — that is up to you! Interestingly, if you can live without any audible alarm at all, then you can just leave the siren mercedes w203 разболтовка disconnected and tape up the connector.
This has no detrimental effect on the rest of the alarm system or its linked components. Equally a customer may decide that the cost to repair a sounder on an older vehicle is just not worth it — so you can just leave it disconnected! If you decide to have a go at changing the batteries you will need to remove the sounder from its bracket, again mercedes w203 разболтовка single security torx fixing is the order of the day.
Once this is removed the sounder can be cut open. Do not allow the blade to penetrate deeper than half its width, as if you cut too far inside you may damage the PCB or sounder wiring.
Once the cut is continuous around the siren unit, pull apart the two halves. The front part will contain all the electronics with sounder, the rear is just a shell cover with an aperture for the electrical connector pins.
Unclip the sounder plug, pink and white wires inside and unclip the PCB pulling it off its two locating pegs. It should now be out of the plastic body and you will be able to get a full visual idea of how bad the PCB has been damaged by the battery leakage.
The one pictured is quite bad and to be honest if it was any worse than this I would not go further, so in this instance it was a borderline repair, reducing my odds of it all working out successfully due to the poor condition. Using side cutters clip off the old batteries flush with the soldered holes and mercedes w203 разболтовка them away. Using a soldering iron heat the remaining part of the battery pin until the solder melts fully, then quickly bang the PCB onto a cardboard mercedes w203 разболтовка.
This shocks the molten solder and mercedes w203 разболтовка from the board and should leave you with clean holes for the new battery contact pins. Repeat on all eight holes. Now you have the board mercedes w203 разболтовка, use PCB flux mercedes w203 разболтовка spray or other electronic solvent to scrub away the electrolyte that has leaked from the batteries, use an old tooth brush and lollypop stick to scrape the most stubborn material away.
You can now get an idea if the battery juices have eaten into the copper track, if it passes inspection, continue cleaning the circuit board with an abrasive pad, I used one similar to those used to clean model railway tracks.
mercedes w203 разболтовка Eventually it should look like the photograph. You will need to purchase a pair of replacement batteries from a Maplin store or other electronic component outlet, they are quite a common 3. Part Number BNB. Fit and solder the twin-tab side of the battery to the PCB, observing the correct polarity. Once you have this side soldered in, cut a short length mercedes w203 разболтовка thin stripped wire or tinned copper wire if you have it.
Using a small piece of cardboard packing under the edge mercedes w203 разболтовка the battery solder one end of the stripped wire into the PCB. Pull the wire tightly and solder the remaining end to the board. Clip off any protruding wire from the back of the PCB. Fit both batteries and check your work for solder bridges etc. Once you mercedes w203 разболтовка happy, mask off the siren sounder plug and three prong external connector pins.
Spray the complete electronic board with clear lacquer, both sides and allow to dry thoroughly.
Шины и диски для Mercedes C-Class (W203, CL203, S203), размер колёс на Мерседес Ц-Класс
Mercedes w203 разболтовка dry, refit the electronics to the front section of the siren unit. Connect the red and pink wires to the sounder unit then run a continuious bead of silicone sealer or epoxy resin around the plastic seam of the housing.
Offer up the rear plastic housing section and press it into position. Then for good measure, although really not necessary, tape around the seam joint with insulation tape making a tight secondary water resistant seal.
You can now refit the rebuilt unit to the car and test your work, mercedes w203 разболтовка it will work perfectly or your time has been wasted! Thanks for the information mercedes w203 разболтовка, I have b class and the alarm triggered for 6 hrs on the ferry, charged the car batery no probs withe car but the alarm goes off randomlyalso the small turn off switches above wind screen dont flash red anymore.
I am that fed up I am going to disconnect from siren. Thanks so much for your help. Hi Brian, Yes the classic siren module battery problem. As most of the controls for the alarm are resident in that mercedes w203 разболтовка box then I very much suspect that if you replaced this the windscreen indicator lamps would work correctly again.
Штатные допустимые размеры шин и дисков для Mercedes-Benz, Узнайте, как выбрать надежные и безопасные резину и диски для колес Вашего.
Disconnecting is the quick and dirty mercedes w203 разболтовка — but I still consider the MB electronic key be the best theft deterrent and rather like house alarms — does anyone take any notice anyway! All the best Steve.
Hi Steve I am going to disconnect the alarm mercedes w203 разболтовка of my b class and after I removed the wheel and inner guard. Is the alarm shape round because what I can see is not completely circular it has formed on the rim like an oval shape mercedes w203 разболтовка am I looking at the wrong thing.
The size is same as a small bean can but not completely round. Could the shape have change. Thanks for any help Brian.
Параметры дисков на Mercedes-Benz C-Klasse (W204)
I have had a quick look on Google images search — Mercedes Siren Sounder and there are a few sounders with mercedes w203 разболтовка more rounded nose mercedes w203 разболтовка like a dome, this is most likely what you are describing. If in doubt, give your local dealer a call tomorrow just to double check what you are looking at is correct.
Even if you just give him your VIN number and get the part number of the device, it is often written on the item in question and with this double check you will be sure. Hope that helps Steve. Steve I have now looked at nearside and offside under the wheel arch guards and mounted on brackets retained mercedes w203 разболтовка a 6mm bolts are the horns which look like the alarm siren except for the shape.
I think these may be also used for the alarm sirens.
So maybe there is a signal electrically which activate the alarm. I am continuing to find the cause and will keep in touch.
Hi Brian, The cause of sporadic activation is often due to the in car motion Ultrasonic sensors, try disarming them mercedes w203 разболтовка the dash switch if not available, try taping some mercedes w203 разболтовка card over them, often its temperature related and these frosty nights will just tip them over the edge if they are playing up.
Keep me in the loop as interested as to what you find. Hi Steve I have located the alarm siren and removed it.
Размеры и разболтовка колёсных дисков Мерседес C-Class
It mercedes w203 разболтовка located on the nearside wheel arch or should I say you can access it there. Remove inner plastic guard nearest to the door side and look up the back of the door cavity mercedes w203 разболтовка sat at the top. Steve drop me an e mail and I will send you the photos this pin points mercedes w203 разболтовка where it is located its my 3Rd attempt but got there in the end. Will keep in touch as I carry out services and repairs.
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