Cupertino Auto Repair

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Topic: Parts

Diesel Throttle Valve
Tuesday, April 24th, 2018

These parts are from the M57TD30 diesel engine in: 2009-13 E70 X5 XDrive 35d, 2004-10 E60 530d, 535d and 2005-13 E90 325d, 330d, 335d.
A Throttle Valve
A throttle valve is necessary for all diesel engines equipped with a particulate filter system. The throttle valve chokes the intake air to increase EGR air flow to ensure that the exhaust gas temperature is increased for the required regeneration of the particulate filter and smooth engine shut off.
This photo shows the seal failure on the throttle valve allowing oil vapors to enter and accumulate in the throttle valve housing and, over time, short the motor activation input circuit to ground. This turns on the Service Engine Soon light, and the system goes into failsafe …

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How many computers are in a car today?
Wednesday, April 11th, 2018

The number will vary with each car based on the electronic systems included in the car.
The average car has about 30 and some luxury cars may have as many as 100 of these microprocessor-controlled devices, known as electronic control units.
 
These units can have up to a 100 million lines of code, more than in some Jet fighters.
The one pictured today is similar to the one used in 2007-10 Mercedes Benz E-Series cars and is unique in the fact that the circuit board is folded 4 times to allow containment of all necessary circuitry and minimize required space. Your key and the ignition are very different than the ones used in years past.
Additionally it includes the Inductive charging ring to maintain …

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Expensive vs. Inexpensive / Good Value vs. Cheap
Wednesday, July 17th, 2013

Chart-The economy is not helping car maintenance get any less expensive.

If this was the day that one of those famous newscasters stops in to ask us, “What are your clients telling you about the economy?”, we would have to lament.  The ONLY thing that most clients want now is “Cheap”.  That is right — the luxury car owners do not want to spend any money on their car.
Now, whether the maintenance is “cheap” enough for you, well, that is another matter.  It does seem to defy logic that in the land of Silicon Valley where the braniacs and multiple undergraduate degrees reign, people can be so shortsighted.  You have purchased an expensive luxury automobile, such as an Audi, BMW or Mercedes. It is comprised of expensive engineering, expensive parts, expensive …

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What is a Fan Clutch?
Wednesday, June 27th, 2012

A Fan Clutch is just another automotive part of that cooling system in your BMW. It is designed to allow your engine to warm up quickly, reduce horsepower drain on the engine, reduces drag, and therefore improves engine efficiency. Your fan clutch plays a very important auto part in keeping your BMW cool. Failure of this component would result in an overheat condition that could damage your engine.

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Cylinder Head Crack – what does this mean?
Wednesday, February 22nd, 2012

Cracks in a cylinder head are often blamed for a head failure, but it is actually a symptom of something else that took place that resulted in a crack. Overheating or thermal stress is the usual culprit of the cracked or warped cylinder head. Loss of coolant, (and continuing to drive in that condition) will result in severe overheating and damage to the cylinder head.

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Battery Registration. What?
Thursday, June 16th, 2011

Battery Registration? What does this have to do with you? No – not a DMV thing, either.
There is an update process that BMW calls “battery registration” when you replace a battery on your later model BMW. Beginning on the 7 Series in 2002 and then later on with the X5’s in 2007 and on down the line with the 3 Series in 2006. (For more details, a complete list can be found in the May 2011 issue of the BMW CCA magazine the Roundel, in Tech Talk)

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Japan Earthquake and BMW Parts
Monday, April 11th, 2011

Has the tragedy in Japan affected our ability to get parts for your BMW and MINI?
No. Fortunately for us, our BMW and MINI parts are German made and we are not experiencing any slow down or shortage of parts for repair.

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New Car Warranty – Your Options Explained
Saturday, January 15th, 2011

Important Info for you, if you own a car!
The Federal Trade Commission (FTC) has released an FTC Consumer Alert entitled “Auto Warranties, Routine Maintenance and Repairs: Is Using the Dealer a Must?” in response to a complaint filed by the Automotive Aftermarket Industry Association (AAIA) and a few other groups.
Honda issued a release back in August 2010, which appeared designed to give car owners the impression that their warranty right would be jeopardized if they used “aftermarket” parts. The Aug. 20, 2010 Honda release stated that “only by purchasing Honda Genuine parts through an authorized U.S. Honda dealer can you be assured of the replacement part’s authenticity, reliability and compatibility.”
The Honda statement was “in direct conflict with the Magnuson-Moss statute,” …

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After Market Parts for BMW – Are They Safe?
Tuesday, August 10th, 2010

If you have a teen or young adult at home who loves to spiff up his/her BMW, MINI, (even the Nissan, Mazda or whatever) you might want to share this. If you are thinking about doing some on-line part shopping for your BMW this is for you, too.
For critical safety items for your BMW such as wheels, always use a trusted site that is operated by an established company with a good reputation. For example, you can pretty much trust that the wheels you might order on-line from a major company such as a TireRack are being sourced from suppliers that they check out for reliability.

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