Exception in rendering!

Message: window is not defined

ReferenceError: window is not defined
    at new c (/tmp/execjs20161208-33384-18z21pvjs:136:3912)
    at m.mountComponent (/tmp/execjs20161208-33384-18z21pvjs:47:15602)
    at /tmp/execjs20161208-33384-18z21pvjs:49:31860
    at a.r.perform (/tmp/execjs20161208-33384-18z21pvjs:47:12503)
    at Object.a [as renderToString] (/tmp/execjs20161208-33384-18z21pvjs:49:31821)
    at r (/tmp/execjs20161208-33384-18z21pvjs:50:21164)
    at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-33384-18z21pvjs:32:6073)
    at eval (eval at <anonymous> (/tmp/execjs20161208-33384-18z21pvjs:173:8), <anonymous>:10:23)
    at eval (eval at <anonymous> (/tmp/execjs20161208-33384-18z21pvjs:173:8), <anonymous>:17:3)
    at /tmp/execjs20161208-33384-18z21pvjs:173:8

Q: BMW E39 has no response

asked by on

I have a problem. BMW E39 has no response. I've tried to scan it with my diagnostic tool. I can't scan it at all. The box is in safe mode. I expect the ECU is bad but I'd like to know your opinion.

A: Yes, it probably is the main computer. It&#...

Yes, it probably is the main computer. It's a really common problem. If you can't get any response from the scan tool, there are really only three things that can go wrong: the main computer could be bad, the wiring between the main computer and the sensor in your data port could be shorted out, or you've got a bad sensor that shorted the whole thing out.

Rather than start with buying a brand new computer, my advice is to go through each of the sensors in the car with the key turned on, and unplug them one at the time. When you unplug one of them and suddenly the scanner can diagnose and start getting data from the computer, this will mean that a sensor is bad. In this case you'll need to replace that sensor first. This is how I test them so you will want to try it out and fix that first, rather than buying an expensive new compressor or a new ECU on a guess.

You don't want to guess with something that expensive. I'd recommend having a certified technician diagnose why you're car is not responding and make any necessary repairs.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Code p2402 evapotative emission system leak detection pump control circuit high.

In many cases a control circuit code will point out a problem with the device in the description which is the leak detection pump assembly in this case. The evaporative emissions system should be checked for any air leaks or...

Q: Is It Unsafe to Continue Driving a Vehicle with Broken Wheel Speed Sensors?

The wheel speed sensors are the vehicle’s sensors which are used to collect data for the vehicle’s safety systems. These systems include such safety features as the anti-lock braking system (ABS) and the electronic stability control system (ESC), and both...

Q: What Specialty Tools Are Needed for Servicing Engine Hoses?

You need a minimal number of tools to service the hoses on your vehicle. The very first thing you need is a container to hold all of the coolant that you will drain from the cooling system of your car....

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.