I have a 96 e300d and started car today and heard a squeal and then it stopped. Driving and noticed no ac. Looked user hood and clutch was not engaging. Read and cleared the codes and now clutch engages, but still blowing hot. Have 2 codes that won't go away:422,459. Both deal with the instrument cluster from what I've read but I need to know what to do and what's wrong. Please help its 100+* here in Florida.