Common Faults of Changan Benben Automatic Transmission

[PaulAnn]

Changan Benben transmission failure may be caused by insufficient transmission oil or transmission oil leakage due to aging seals and poor sealing, or it may be caused by transmission failure. The following is a detailed introduction about the transmission: 1. The internal control mechanism of the automatic transmission is very precise, with small matching gaps, so the quality requirements for the oil are very high, and it must be kept clean. After long-term use, the transmission oil will produce oil dirt, which may form sludge, increasing the wear of friction plates and various components, affecting power transmission. 2. The automatic transmission oil change cycle is generally two years or 40,000 to 60,000 kilometers. After draining the old transmission oil, add new automatic transmission oil.

[DeLiam]

Once when driving a friend's Benben, I noticed the gear shifts were particularly jerky, making it feel like riding a boat. This kind of jerky shifting is most common in economy cars with automatic transmissions, especially during the low-speed 1-2 gear shifts, where the 'clunk' is particularly noticeable. After inspecting several cars, I found that in most cases, the transmission fluid hadn't been changed for too long, causing sludge to jam the solenoid valves in the valve body. Another issue is poor heat dissipation leading to excessively high oil temperatures—the thermometer showed the oil temperature could soar to 130 degrees after continuous uphill driving, directly aging the rubber seals in the valve body and causing oil leaks. The last car I repaired was even worse—it got stuck in 3rd gear and wouldn't move. Reading the fault code revealed that the speed sensor was clogged with metal shavings. The key to maintaining these small cars lies in frequent oil changes; replacing the original oil every 40,000 kilometers can prevent 80% of the issues.

[LilyLee]

My used automatic BenBen started acting up last year, taking two minutes to move after a cold start. The mechanic opened the oil pan and found the magnet covered in iron filings, saying the clutch plate wear debris clogged the oil passages. Another odd symptom was a humming noise during reverse parking, diagnosed as a leaking hydraulic valve body. The scariest moment was when the tachometer went wild on the highway and acceleration felt mushy – the repair shop found three wires melted by the exhaust pipe. Now I have leaks checked every three months; aging rubber seals drip conspicuous red oil spots in the garage, but replacing O-rings costs just over 100 yuan, far cheaper than transmission repairs.

[DelWillow]

A veteran driver who has driven a Benben automatic transmission for five years tells you that the most vulnerable part of this car is the dual-clutch transmission. Especially when starting at a traffic light, it shakes like a massage chair—most likely due to burnt clutch plates. Last month, I just helped a neighbor fix an issue where the car wouldn't move in D gear at all; upon disassembly, we found the guide bearing of the shift fork had fallen apart. In my opinion, the most important thing is not to cheap out with aftermarket parts. One owner replaced the valve body with a knockoff, and it started leaking oil within three months. Additionally, overloading beyond 1 ton can easily lead to trouble. Last year, hauling New Year goods up a slope directly triggered overheating protection, causing the dashboard to display a snowflake symbol and forcing a downshift, which scared me into pulling over to cool down for half an hour.