Let me first introduce my model. The 18 GLC 260 models are currently driving 55,000 kilometers. There are not many vehicles driving. Coupled with the mask incident, the mileage is less than 10,000 kilometers per year. Thinking that the year is almost up, I contacted 4S to do transmission maintenance. After reading the sharing posts of many motorists, especially the Yan version, I had psychological expectations for the elegance of Mercedes-Benz’s 9-speed gearbox. After the five-year extended warranty, in addition to the air conditioning filter and air filter being replaced by themselves, it is relatively large. For maintenance items, I still need to go to the 4S for maintenance, which is relatively reassuring.
Arriving at the 4S store early on the weekend, standard process matters such as vehicle handover were omitted. When the service consultant confirmed the maintenance items with me, the service quote was 3695 yuan. I couldn’t help but feel dizzy. I was told that their store did not implement Starlight prices, and at the same time, they promoted Mercedes-Benz’s best friend plan to me. After the price was more than 700 yuan, gearbox maintenance items can be discounted to 2900 yuan. Answer and consider that there is now a stored value for maintenance and repairs provided by insurance in the store under my name, which is of little value. At the same time, I remember that the two moderators have always reminded that maintenance needs to be followed up throughout the process, and they have also made requirements to enter the field for study.
After the after-sales consultant informed me that the vehicle had arrived at the station and could enter the site to observe, I followed the consultant to the front of the vehicle and found that the guard plate of the vehicle had been removed and the transmission oil was being discharged. Preliminary observation of the oil found that it was still clear.

After the oil flowed from relatively rapid to intermittent, Technician A removed the screws on the gearbox oil pan and removed the oil pan. At the same time, all the oil in the gearbox oil pan was poured into the waste oil drum.