Coolant Leak w/ 2018 BMW 540i
Location: La Mesa, CA
Duration: A few days
Cost: $1,800 – $2,300
Company: Euro Auto Tech & Smog
Project Overview:
At Euro Auto Tech & Smog, we addressed a persistent coolant leak on a 2018 BMW 540i. After performing a pressure test, our technicians quickly identified a few common failure points in the cooling and oil systems of this B-series engine.
Key Findings & Repairs:
Despite the coolant being low, the vehicle was otherwise in excellent condition: clean, stock, and free of rust or signs of neglect.
Services Performed:
Duration: A few days
Cost: $1,800 – $2,300
Company: Euro Auto Tech & Smog
Project Overview:
At Euro Auto Tech & Smog, we addressed a persistent coolant leak on a 2018 BMW 540i. After performing a pressure test, our technicians quickly identified a few common failure points in the cooling and oil systems of this B-series engine.
Key Findings & Repairs:
- Coolant reservoir had a micro-crack, leaking under pressure
- Lower reservoir hose was worn and compromised
- Oil filter housing was also leaking — a known issue on these engines
Despite the coolant being low, the vehicle was otherwise in excellent condition: clean, stock, and free of rust or signs of neglect.
Services Performed:
- Replaced the oil filter housing
- Installed a new coolant reservoir, overflow hose, and lower coolant pipe
- Topped off with fresh coolant
- Completed with a full synthetic oil change
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