Skip the auto shop - Our mechanics make house calls

Q: My suv wont start. It shows DSC malfunction and 4x4 problems.

asked by on

Where is the location for the dme main relay?

My car has 49800 miles.
My car has an automatic transmission.

The DME relay is a dual relay that powers the fuel system. This relay is typically located in the fuse box located inside of the ECU compartment. There will be several locations in the vehicle that will house fuses and relays. Your owners manual may have more information on this.

A code failure with the DME relay may be related to the throttle control actuator. The fuse itself is rather large and would take a serious power surge to damage. If it is faulty, something is to blame.

The throttle control module regulates the throttle and keeps enough gas going into the engine to keep it from stalling. If it is not telling the pump to fuel the engine correctly, the vehicle will not start.

If you are having your vehicle scanned by a generic scan tool, the codes for other issues will come up more generic. Make sure you are using a BMW or equivalent scan tool. If you need assistance with this, consider YourMechanic, as one of our mobile technicians can come to your home to diagnose your no start condition and help you fix it accordingly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: On CNG, engine often give a sound of misfiring and got stop, while on petrol no such issue

Hello. The symptoms you are experiencing can be caused by many things. A few things I would look into are the fuel system, the engine management system, and the ignition system. If any of the components, such as the fuel...

Q: my 2010 jeep wont start

Hello, thank you for writing in. If the battery is fully charged and the starter is receiving a full 12 volts (or at least 10), then the starter may have failed. You can test this by testing for voltage at...

Q: car won't start

The electronic noise is most likely the fuel pump operating. The gas smell is concerning. A fuel leak could be dangerous and the risk of an engine compartment fire could result if the vehicle operates for any period of time....

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...