Exception in rendering!

Message: window is not defined

ReferenceError: window is not defined
    at new c (/tmp/execjs20161208-55793-bs3qu4js:136:3912)
    at m.mountComponent (/tmp/execjs20161208-55793-bs3qu4js:47:15602)
    at /tmp/execjs20161208-55793-bs3qu4js:49:31860
    at a.r.perform (/tmp/execjs20161208-55793-bs3qu4js:47:12503)
    at Object.a [as renderToString] (/tmp/execjs20161208-55793-bs3qu4js:49:31821)
    at r (/tmp/execjs20161208-55793-bs3qu4js:50:21164)
    at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-55793-bs3qu4js:32:6073)
    at eval (eval at <anonymous> (/tmp/execjs20161208-55793-bs3qu4js:173:8), <anonymous>:10:23)
    at eval (eval at <anonymous> (/tmp/execjs20161208-55793-bs3qu4js:173:8), <anonymous>:17:3)
    at /tmp/execjs20161208-55793-bs3qu4js:173:8

Q: DPF (Diesel Particulate Filter) melted

asked by on

Hello. The DPF itself (metal) has melted and caused the DPF to block my BMW 118d. I have bought a new DPF but before fitting it in I need to find the cause for the old one melting as I don't want the same to happen to the new one. Would you know why the DPF itself melted?

My car has 92000 miles.
My car has a manual transmission.

A: Hello. The DPF functions by trapping certai...

Hello. The DPF functions by trapping certain diesel particulates, and periodically goes through a regenerative cycle to burn those particulates (i.e. when you're on the motorway and get the temperature high enough to regenerate). This is a bit speculative, but perhaps the regenerative phase was not initiated often enough to keep the particulates burned off and too much particulate material accumulated. A regeneration could have occurred that was excessive, creating enough heat to cause the melting you describe. This might occur if you have a high percentage of low-speed or stop and go driving, with few motorway driving segments. I would make sure I was getting regular higher-speed segments of 10 miles/15 kilometers or more on a weekly basis to prevent this accumulation. If you need to have this scoped out by a professional, have a qualified technician inspect the system thoroughly and advise you on the best actions to take at this point.

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: Battery discharging while stopped, electrical devices were temporarily switched off.

The first thing to do with a draw is to check and make sure nothing is on that can be turned on by a human. Some common sources are interior lights, exterior lights, after market stereo systems or other after...

Q: Coolant doesn't stay in tank

Greetings. The coolant reservoirs on your model vehicle usually produce leaks at some point. It is due to the fact that the reservoir itself is constantly under pressure created by the coolant system. The material it is made of is...

Q: When the hot air is turned on, the drivers side blows cold and passenger side blows hot.

Hi there, thanks for writing in. On most imports and some domestic cars, there the AC blend door distributes the air to different vents when the option is selected. This component is controlled by an electric actuator. Sometimes the fuse...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...