Five problems related to differential unit have been reported for the 2006 Toyota Tacoma. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Tacoma based on all problems reported for the 2006 Tacoma.
Rear differential oil leak. There had been a recall in the 2016 Toyota Tacoma but my 2006 has the same problem starting years ago. I did not know it was leaking until I took it to the dealership.
The contact owns a 2006 Toyota Tacoma. The contact stated while driving 30 mph, he noticed an abnormal clapping sound coming from the rear of the vehicle. The vehicle was taken to the dealer where the technician stated that the differential unit would need to be replaced. The vehicle was not repaired. The failure mileage was 57,859.
2006 Toyota Tacoma with automatic transmission. Same complaint as others. Low end rumbling sound and vibration in front end between 55 and 65 mph. Front differential bearings, where front axles enter the differential case, have excessive play (slop) in the bearings. Dealer refuses to repair the bearings even though it is still under warranty. I have video taped the condition as well as the mileage and will keep records of my multiple visits to the dealer. I have also found other used Tacoma trucks on dealer lots with as little as 20,000 miles that have this same problem. I believe Toyota engineered these differentials to last only 60,000 mi and most owners may not notice the problem until warranty is over. My 1992 Toyota pickup 4x4 with 238,000 miles has less bearing slop in it than the '06.
I own a 2006 Toyota Tacoma which I purchased new, and now have 11,347 miles on it. It's an automatic 4 speed ect-I transmission. From date of purchase to present at speeds between 50 and 60 mph there is a loud gera whine. Below 50 and above 60 it goes away. I think it may be caused by the ring & pinion gears in the differential,although I am not certain.
There is a whine in the running gear at 53 to 63 miles per hour. Above or below that speed range there is no whine.