2019 Mercedes-Benz GLA250
Mileage
142,597
Service Date
11/21/2025
Services Performed
- Inspection & Diagnosis Pulled vehicle into the shop and verified signs of dried coolant residue, though the coolant level itself was normal. Performed a cooling system pressure test to help reproduce the leak. Under pressure, coolant began to leak from the underside of the engine. Raised the vehicle and removed the skid plate for further inspection. Observed coolant leaking from the backside of the engine block. Determined the source to be the oil filter housing unit, which contains coolant passages and is leaking from its rear area. Cause Oil filter housing assembly failure, allowing coolant to escape from the rear of the housing/block area. Recommendation / Required Repairs Replace the oil filter housing assembly. Install new gaskets/seals during replacement. Refill cooling system with the correct Mercedes-approved coolant. After repairs, perform a pressure test to ensure no further leaks are present.
- MULTIPOINT INSPECTION
- The technician successfully replaced the oil filter housing and all necessary components, then re-pressurized the cooling system. The vehicle maintained a pressure of 15 psi for 20 minutes. During a road test, the technician noticed a warning light indicating a battery issue. Upon returning to the shop, they found low voltage codes stored in the ECU and recommended replacing the battery for further testing. After replacing the battery, the technician cleared all fault codes from the ECU except for one related to the thermostat, which is currently not triggering the check engine light. They advised monitoring the vehicle's temperature, as it is operating within specifications. If the check engine light activates, it may indicate the thermostat is stuck open. Additionally, the vehicle is overdue for a service, but the client has declined any further repairs at this time.
- BATTERY – Remove & Replace – Main –
- TEST DRIVE
SANDY A. gave our service a 5 star review on 11/23/2025
