BMW Archives - UnderhoodService
BMW Daytime Running Lights Are Dim

The issue is likely because the connection between the LED module & light tube inside.

BMW Transfer Case Service

The transfer case is a rather unique design in the way that it operates a clutch pack mechanically, not hydraulically.

BMW Spark Plug Replacement

Here are a few things that you need to know before replacing spark plugs in a BMW.

Seasonal Fuel Blends

The cause of the misfires is the temperature fuel evaporates, otherwise known as the volatility.

BMW Dual-Clutch Transmission Diagnostics

A DCT transmission uses the gearing principles of a manual transmission.

Engine Leak Diagnosis On BMW Turbo V8 Engines

Use a borescope to identify if the source of the leak is from under the turbochargers.

Spark Plug Replacement Problems And Preventive Measures

When fine-wire spark plugs were first introduced, many broken electrodes were reported because of incorrect gap tools.

MAHLE Motorsport Offers
 Toyota/BMW PowerPak Piston Kit

The upgraded PowerPak piston kit for the Toyota Supra and BMW B58 is designed to handle 1000+ HP.

VANOS Variable Valve Timing Diagnostics

Diagnosing a VANOS system does not require that you speak German. What it does demand, however, is knowledge of how the actuator adjusts the camshaft, how the solenoid controls the actuator and when the engine control module changes camshaft timing. As for tools, you will need the appropriate tool set to lock the crank and camshaft. You will also need a scan tool and a scope to observe the crankshaft and camshaft signals to accomplish more advanced diagnostics.

VANOS BMW: Variable Valve Timing Diagnostics

Diagnosing a VANOS system does not require that you speak German. What it does demand, however, is knowledge of how the actuator adjusts the camshaft, how the solenoid controls the actuator and when the engine control module changes camshaft timing. As for tools, you will need the appropriate tool set to lock the crank and camshaft. You will also need a scan tool and a scope to observe the crankshaft and camshaft signals to accomplish more advanced diagnostics.

BMW Extended Warranty On S63 Direct Injection High-Pressure Fuel Pumps

BMW has extended the warranty on the high-pressure fuel pump for the 2012 X5 M and X6 M models with the S63 engine. The warranty covers the pump for 10 years or 120,000 miles. BMW is not recalling the pump and no reason was given for the extension of the warranty.

direct-injection-high-pressure-fuel-pump
Dana Joins Consortium To Develop Advanced Automotive Fuel-Cell Technology

Dana Holding Corp. has joined a consortium that includes fuel-cell component developers, academic institutions and automaker BMW Group for a three-year project to develop and validate next-generation automotive fuel-cell stack technology and materials.