The following situation! Old pump went rear wiper spray function not! The following done! 1. container cleaned, rinsed,before vacuumed. 2. line checked front to back! No leak or constipation. 3. paneling tailgate removed, side right also! distributor nozzle cleaned, after which release compressed air! 4. spray nozzles reargate cleaned, adjusted! Has everything done nothing!! New pump used ( 59 Euro) . Now after 4 weeks same Probl front wiper spray function given ! rear wiper not ?! Lief up 2 days ago still ! Can not be his new pump after about 4 weeks again on the A…. P.s when actuating spray function whirring (front) audible ! rear not ?!