Question about BMW Cars & Trucks
Possible more noticeable in hot weather when air con is on , no faul codes !
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Posted on Jan 02, 2017
Your vehicle has the 4T60E transmission,and there is a speed sensor mounted on the transmission case that the vehicle's computer uses to compute vehicle speed,and relay it to the dash mounted speedometer.The best way to diagnose this problem is to first,hook up a scan tool that is available at automotive repair shops,and scan the vehicle for trouble codes first.Your vehicle probably has a stored trouble code along the lines of a Vehicle Speed Sensor (VSS).After pulling codes,go to the data stream on the scan tool and look at the VSS signal that the computer is seeing,and when the speedo acts up,and stops working,look to see if the computer is seeing,a speed signal.If the vehicle computer is seeing a speed signal,then it's probably the speedo in the dash gone bad.If the vehicle computer is not seeing a speed signal,then it is likely a problem with the speed sensor mounted on the transmission,or the wires right before it.So,to diagnose really requires a scan tool,with a data stream,or you could just have the speed sensor replaced,and hope that fixes it.The speed sensor is located on the passenger side of the transmission,only accessible from under the car,but where the pass side axle actually goes into the transmission,the sensor is directly above that point,and retained in the case with a 10 mm bolt.It has two wires going to it.Good luck.
Posted on Aug 06, 2008
You might want to suspect a stereo amplifier. Does your car have DSP? In any case, look in the trunk on the left hand side. You will find your radio amplifier back there. It will have about a 3in connector with a bunch of twisted pair wiring. Remove the connector and make sure there is no water contamination. All sound processing takes place in the amp.
Posted on Mar 09, 2009
With the key in the off position; remove the RDO BAT fuse for at least 10 seconds then replace the fuse; turn on or start the vehicle and try the A/C again. Removing the fuse should reset blend actuators
Posted on Apr 24, 2009
Very simple buy the book and how did you get those codes without knowing what they mean did you take it to auto zone or shucks? they wont tell you what the code means but theyll give you the code to help your very trusted auto machanic, also Ebay has a very wide variety of standard to very complex code reading machines and that would be your number one saver in money if your a Do-it-yourselfer like myself. now since i dont have the book on BMW's my guess is the mechanic didnt reset the computer before charging your last bill so get the code book on your specific model and year and go from there
Posted on Jul 25, 2009
SOURCE: Audi A3 Air Con Cut out
Happened to me too, when the ECO light comes on automaticly (and it only blows hot air) it means it's simply broke.
I don't know the exact production date of your car, but there is/was an airco-related dealer recall for some cars, so just contact your dealer and have it fixed, but don't forget to mention the recall (it might save you a lot of money when your warranty has already expired).
Posted on Aug 17, 2009
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