For my SLK I was faced with the choice Billigprodukt for 29,95, or product from a German manufacturer for around 70.- .So prefer a bit more expensive, German engineering. Said and done. Processing via Amazon smoothly. After receiving unpacked, the components made a good and higher quality impression than in recessions other buyers in other products beschrieben.Der installation, just with this vehicle designed to be a daily task because the expansion of the rear bumper is relatively complex. Not enough, they must also completely dismantled, and extremely thick polystyrene baffle elements must be pierced to accommodate the held sensors to schaffen.Exakt to the installation guidelines, what distances etc is concerned .According been installed then the disillusionment, continuous beep in Rhythmus.Kein topic , is indeed a hotline. Unfortunately, this hotline is generally only occupied for hours. In the morning as much as I can remember from 0900-1100 and again until the next afternoon Tag.Dann but Hotline achieved and looking forward again for 1.5 hrs or so ähnlich.Also. The staff there described the mistake, he asked first if I had stuck to the wiring diagram according to the enclosed instructions Inst because they may contain an error. I should check how the speaker is connected. Ok, done told what reconnected 1hr work because many of the panels are removed cumbersome in the trunk müssen.Hatte fortunately a proper guidance and everything connected correctly. The next day, therefore again contacted the hotline (s. Opening / opening hours above), received the next tip. There may be a sensor is defective. These determine through targeted removal of all sensors, and successively re-connect. Result: 1 external sensor off, everything ok. The next, 2nd v.links with corre- rhythmic beeping duration -Aha, defective I think. So these decoupled again and took the next 2 right sensors sequentially tuned. Plant initially ok, but after a few seconds starts to fall to plant in a continuous beep, and communicate via "Morse code" to indicate the error. Again and again in the same rhythm, you know this is indeed of other electronics on the vehicle, such as the first generations of engine control units o.ä.Hotline can thus start anything. Never had such a thing .... Finally, disconnect the two middle sensors because all possible combinations have been played on their own. Now the plant makes mainly what they want. There still get error messages, especially if the reverse gear is connected longer and no more obstructions. Symptoms of the hotline described. Employees are understood to that possibly 2 new sensors could be defective, ... never had as I said, but ... my desire to send out 2 new sensors for possible warranty is only met after I registered myself in the customer file. Also, I should pay in advance, and after a successful exchange of sensors whose sending in, by check-in pro / D & W would, then, be credited to me this really so defective recognized again. Ok wants, yes have clarification. So ordered 2 sensors and paid in advance. Angrily, the whole system with 4 sensors, control unit, speakers, wiring harness, etc. cost between 60-70.-, fair and reasonable. 2 sensors cost to them in the mailbox are 40.75 ??? - not fair and reasonable. Upon receipt of the sensors, after a moment weighing up apart from the installation, because again the bumper must be disassembled in order to install the non-destructive sensors -and-. But definitely the manufacturer-per nothing goes with many other vehicles probably in a few minutes. Sent back, and let credit amount back / refund, which also barely lasted four weeks, for alleged errors of accounting. Conclusion: In no-pro product more for the same money you can buy and obstruct approximately 3 China plants the price range 20-30. Disappointed me was the quality of assistance in case of problems, and the settlement of an alleged warranty case, where you have to pay in advance only for totally overpriced sensors! Put six! For the processing of the components and the appearance of the quality of this, there are 2 stars, because there are quite valuable and thoughtful wirkt.Die appearance is good, and also the speaker is loud enough. Drive now permanently with only 2 external sensors, limited function, and occasional misreporting through the area until it annoys me too much, and the plant will be disconnected.
