my second and last Renault, climate rear window, rear wiper, radio

Hello your dear bin 56 and have driven many different cars. I had bought the Kango Diesel because I had been looking for a cheap car with high sitting position. Unfortunately the beebop very disappointed me, let me last year air conditioning replenish (Bosch service). But the summer comes and the thing does not work again. So first of all fuses and relay checks …….. with almost the fingers broken, every securing, every relay out and measured. no defective found, the only assurances that were not measured were the very large ones in the engine compartment. Thinking …. many times it is connected to the new radio ….. original radio .. needs a code that I do not have but climate does not work…. ok the other radio again, wants to go shopping now the rear window does not open or I can not get the door open anymore, since the window does not sink, even the windscreen wiper does not work at the back anymore. I hope the hir jema and has a piece of advice for me. Sincerely, Spritkop