
BMW Comfort Access Keyless Entry Start Problems
Comfort access is a feature that allows a driver to unlock/lock the vehicle without physically pressing buttons on the key fob and start the car by
In this guide, we look at common problems that turn on BMW Check Engine Light (CEL), also known as Service Engine Soon (SES).
If your BMW check engine light (or service engine soon light) stays on, it means that the Onboard Diagnostic System (also known as Digital Motor Electronics DME) has detected a problem with the emission system, engine, or transmission. BMW check engine light may come on due to something as simple as a loose gas cap, but it can also indicate an expensive engine or transmission problem.
Don't panic!
It doesn't mean your BMW needs to be towed unless the car is overheating or if the check engine light is flashing. Continuing to drive if your BMW check engine light continues to flash can lead to more serious and costly problems down the road.
If the check engine light or service engine soon stay on, your BMW may drive fine if the trigger is due to EVAP related fault code.
Unless the problem is more serious in which case you may notice performance issues such as:
BMW Service Engine Soon light may be on without any noticeable performance issues.
There are hundreds of problems that may trigger the check engine or service engine soon in a BMW. BMW specific problems include:
Do not start replacing BMW parts without reading the fault codes.
If you don't have a BMW scan tool, have a shop specializing in BMWs read the codes and troubleshoot the problem for you. Your local auto parts store may read your BMW check engine light free of charge.
Once you have a diagnosis performed, you can decide if the repair is something that you can tackle yourself or let a BMW shop complete the work.
The first step is to check the fuel cap. If the cap is loose, it will trigger the CEL. Tighten it until you hear it click.
Most 2005 and newer BMWs will also show a separate symbol to remind you if you forget to tighten the fuel cap. If the gas cap was loose and you tighten it. The CEL light will reset itself in a few driving cycles, typically within a day or two.
If the BMW drives fine, closely monitor the engine temperature. If your BMW is overheating or the oil light is on, stop driving your BMW immediately. Get the BMW towed if necessary.
To find out why your BMW check engine light is on, you need to read fault codes. This is a simple procedure you can perform yourself.
These instructions show you how to read and clear codes related to check engine light on a BMW. It is preferred to diagnose BMW check engine light with an OBD-II scanner that can read BMW specific fault codes such as Foxwell NT510 for BMW.
Procedure
This procedure only allows you to read and clear codes from the ECU / DME / DDE.
If you have other problems, a generic OBD2 scanner will not read and clear the codes. In other words, a generic OBD2 scanner is only able to read and clear codes from the ECU but not from other modules, including ABS, SRS, Airbag, DSC, Stability Control, EGS Transmission, etc.
Note that you can read the codes, but you can't clear them unless you fix the problem that triggered the code. If you don't fix the underlying problem, the light and the code will return. It returns right away; in other cases, it can take a day or two.
There is a difference between BMW Check Engine Light vs. Service Engine Soon.
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If the check engine light is flashing, it generally means that the DME module has detected a misfire. If the light is flashing, you will notice poor acceleration, BMW engine shaking.
This problem is often caused by bad spark plugs or bad ignition coil, a common problem with many BMWs, including 1, 3, 5, 6, X1, X3, and X5 series.
Other possibilities include a vacuum leak, bad mass airflow sensor, clogged catalytic converter, and a blown head gasket. It is not recommended to drive a BMW if the service engine light is flashing.
When BMW's service engine soon' light is flashing, and the car is shaking, you have a problem that needs to be addressed as soon as possible.
Under these conditions, your BMW will be very sluggish, and the motor will shake at idle.
By YOUCANIC Automotive Experts Published on: Monday, December 18, 2017. |