Change Car Turbo Mercedes-Benz GLE
Change Car Turbo
| Estimated time | 5h00–27h00 |
|---|---|
| Estimated labour cost | ~500–2700£ |
| Difficulty | Very technical |
What is the role of the Mercedes-Benz GLE turbo?
The turbocharger increases engine power by compressing the intake air, allowing more air (and therefore more fuel) into the combustion chambers. It is driven by exhaust gases spinning a turbine at speeds up to 250,000 rpm. The compressed intake air passes through an intercooler to reduce its temperature before entering the engine.
What are the symptoms of a failing Mercedes-Benz GLE turbo?
Common symptoms include: loss of engine power or boost, excessive exhaust smoke (blue/white for oil burning, black for over-fuelling), whining or whistling noise from the turbo area, engine warning light or turbo fault codes, oil leaks at the turbo housing, increased oil consumption.
What causes Mercedes-Benz GLE turbo failure?
The main causes are: oil starvation (blocked or restricted oil feed lines, low oil level, poor oil quality), foreign object ingestion, excessive exhaust temperature, worn bearings due to high mileage, and contaminated oil. Always investigate and fix the root cause before fitting a replacement turbo.
Can a Mercedes-Benz GLE turbo be reconditioned?
Yes, turbo reconditioning is a common and cost-effective alternative to buying new. A reputable service will disassemble, inspect, replace worn parts, rebalance, and test the unit. Expect to pay 30–60% of the new price.
Is it difficult to change a Mercedes-Benz GLE turbo?
Difficulty level 5/5: very technical. The turbo is connected to both the intake and exhaust systems, requiring numerous disassembly steps. Approximately 5 hours on average for a professional mechanic. Key precautions after fitting: change the engine oil and filter, prime the turbo with oil before starting, allow the turbo to cool down after hard driving by idling for 30 seconds before switching off.
2 models covered
| Model | Year Range | Engines covered | Fuel |
|---|---|---|---|
| GLE 2015-2019 | 2015-2019 | 250d/300d Diesel (651.960), 320 4MATIC Petrol (276.821), 350 d BlueTEC 4MATIC Diesel (642.826), 400 4MATIC Petrol (276.821), 43 AMG Petrol (276.821), 450 / AMG 43 4MATIC Petrol (276.821), 500 4MATIC Petrol (278.928), 500 4MATIC Petrol (278.928), 500 e 4MATIC Electricity,Petrol (… | Diesel, Electricity, Petrol |
| GLE 2019-2025 | 2019-2025 | 300 d Diesel (654.920), 300 d EQ Boost 4MATIC 48V (MHEV),Diesel (654.820), 350 d 4MATIC Diesel (656.929), 350 de 4MATIC Diesel,Electricity (654.920), 350 e 4MATIC Electricity,Petrol (274.920), 400 d 4MATIC Diesel (656.929), 450 EQ Boost 4MATIC 48V (MHEV),Petrol (256.930), 580 EQ… | 48V (MHEV), Diesel, Electricity, Petrol |
