Table 1 shows three common engine and engine cooling related problems of the 2003 Mercedes Benz C320.
| Problem Category | Number of Problems |
|---|---|
| Engine Cooling System problems | |
| Radiator problems | |
| Water Pump problems |
On a 2003 c 320 mbnz, the radiator now leaks into the transmission. This is going to require the radiator to be replaced and for the transmission to be flushed. This leaking radiator fluid could have already damaged the transmission, and if so, it will have to be replaced. This problem causes a lack of power and therefore a loss of acceleration. It happens without any warning, often leaving you vulnerable due to the loss of power, a potential accident waiting to happen.
This happened in my 2003 C320 at 54,000 miles. I initially noticed a light rubbing or grinding while accelerating, with light vibration. At the dealership I was told I would need a new torque converter, new radiator, and a fluid flush. The radiator fluid was mixing with the transmission fluid. After those repairs, my C320 was still shifting hard and the grinding noise was still there. It turns out the transmission was ruined as well. Two replacement transmissions were needed until it was ready to be picked up. I've been told that the mixed fluids are not uncommon in this model and yet mbusa has made very little effort to answer my questions.
"check coolant level" level warning sign was on. Apparently, there is leaking of coolant some where. It was at the water pump, which was replaced on June 20, 2019. It happens again now, about 9 months later.