This Mercedes C180 came in with an aircon that had stopped working. The diagnosis pointed to two failed rubber hoses. We replaced both pipes, tested the system, and later confirmed it was still working correctly after the owner returned concerned about performance in Singapore's extreme heat.
Job completed: September 2026
| Car | Mercedes-Benz C180 |
|---|---|
| Symptom | Aircon not working |
| Fault found | Two rubber aircon hoses with aluminium end fittings had failed |
| Repair done | Both aircon pipes replaced and system tested before handover |
| Parts | Quality replacement aircon hoses with aluminium end fittings |
| Time taken | Timeline confirmed when you book |
| Cost | Quoted after diagnosis |
| Warranty | At least 6 months workmanship warranty on the repair |
The owner brought in a Mercedes-Benz C180 with an aircon that had stopped working. In Singapore's heat and humidity, a failed aircon is not a minor problem. It makes driving uncomfortable within minutes and leaves the cabin stuffy and hot.
The ask was straightforward: find out what had failed and fix it properly. The owner wanted the aircon working reliably, not a temporary patch.
The Mercedes-Benz C180 is a popular compact executive saloon. Its aircon system circulates refrigerant through a network of hoses and pipes connecting the compressor, condenser and evaporator. The rubber hoses in the system are flexible sections that absorb vibration and allow for engine movement. They are sealed at each end with aluminium fittings, crimped into place.
Over time the rubber degrades, especially in Singapore's heat. When a hose fails, the system loses refrigerant and the aircon stops cooling.
We inspected the aircon system and identified two failed rubber hoses. Both hoses had aluminium end fittings. The failures meant the system could not maintain pressure and the aircon was not working.
Replacing just one hose and leaving the other degraded one in place would risk another failure shortly after. We showed the owner what we found and recommended replacing both pipes at the same time to give the system a proper fix.
Rubber degrades over time, especially in Singapore's climate. The aircon system on any car runs under pressure and cycles refrigerant continuously whenever the aircon is switched on. In a hot, humid country where aircon runs almost every trip, the hoses work hard.
The aluminium end fittings are crimped onto the rubber hose. As the rubber ages it loses flexibility and can crack or harden at the joint where the fitting meets the hose. Vibration from the engine accelerates this. A small leak in one hose will slowly deplete the refrigerant until the system stops working altogether.
This is normal wear over the life of a car. It is not caused by anything the owner did wrong, and it is a straightforward repair when caught and addressed properly.
We replaced both failed rubber aircon hoses, each with aluminium end fittings. The system was inspected and tested after the repair to confirm it was working correctly before the car was returned to the owner.
The owner drove away satisfied and left a Google review after the job.
Some time later, the owner came back. The aircon had cut out in Singapore's direct 35 degree heat. We re-checked the system and confirmed it was working correctly. The owner was satisfied and updated their Google review.
From our team's record of this job. Number plates are pixelated.
The cost of replacing aircon hoses on a Mercedes C180 depends on which pipes have failed and the extent of the work. We inspect the system, confirm exactly which components need replacing, and give a clear quote before any work begins.
On this job, both rubber hoses were replaced together. Doing both at the same time is the sensible choice when more than one hose is worn: replacing one and leaving the other to fail shortly after costs more in total and means the car is back in the workshop again.
Have the aircon system checked as part of your regular servicing. A visual inspection of the hoses and fittings can spot early signs of cracking or seeping before a full failure.
If the aircon is noticeably less cold than usual, if it takes longer to cool the cabin, or if there is a faint oily smell near the aircon, get it looked at early. A small hose leak caught early is a simple repair. Left until the system fully depressurises, the compressor can also be damaged from running without adequate refrigerant.
This Mercedes-Benz C180 (Car aircon pipe replacement) was handled at 1 Car Service, an independent workshop in Sin Ming AutoCity, Singapore. For Mercedes-Benz, we use dealer-level XENTRY diagnostics. The work is backed by a warranty of at least 6 months. We hold a 4.9★ rating from 1,817+ Google reviews.
WhatsApp us your car model and the symptom. We inspect the aircon system, find the root cause, and quote clearly before any work begins. Every aircon repair carries at least a 6-month warranty.
Cost depends on which components have failed. For aircon pipe replacement the price covers the parts and labour for the specific hoses that need replacing. We inspect first and quote clearly before any work begins. WhatsApp us your car model and symptom for an honest estimate.
In very high temperatures, a car aircon system can trip its protection mode to prevent damage. If this happens it does not always mean a fault has returned. On this C180, the system tripped in 35 degree direct sun heat. We re-checked the system and confirmed it was working correctly. If your aircon stops in extreme heat, it is worth having the system inspected and pressures checked to confirm all is well.
We inspect the system visually for signs of oil residue or staining at the hose connections, and check the system pressure. A low or dropping pressure reading points to a leak somewhere in the circuit. On this C180, the inspection identified two failed rubber hoses as the source. We showed the owner the fault before starting any work.
We use XENTRY, the Mercedes-Benz dealer-level diagnostic system, for fault code reading and system checks on Mercedes vehicles. For aircon diagnosis we combine electronic scanning with a physical pressure check and visual inspection to get a complete picture of the system.
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