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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N47 and N57 Turbodiesel Engine / Drivetrain / Exhaust Modifications > 335d - Preheating, please wait
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      01-06-2020, 07:15 AM   #1
CJF30
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335d - Preheating, please wait

This message came up on my dash this morning and the car took a few seconds to start. I have searched online and know that this can be normal for a diesel - especially in cold weather. My concern is that Iíve run my car for over a year now and never experienced this - even recently in temps down to -3C, but this morning it was +8C, so Iím surprised this would happen today as it is particularly mild. I didnít do anything any different today and usually take around 30 seconds from opening the doors until I start the engine. Am I worried about nothing or could this be a sign of another issue forming - CBU, glow plugs need replacing etc? Car is just over 3 years old and covered c 40k miles. I may be extra paranoid as Iíve just passed out of warranty. Thanks in advance for any advice.
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      01-06-2020, 07:27 AM   #2
tjlees
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one or more glow plugs maybe on the way out. I had a similar issue until it came up with a fault on cylinder 3. I actually replaced all of them as a matter of precaution at an indy.

btw I got the fault reset until I was sure it was definitely an issue since the car started fine in -4c

problem started at 4yo and approx 45k miles
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      01-06-2020, 05:37 PM   #3
CJF30
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Ok - thanks
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      01-12-2020, 04:24 AM   #4
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Mine does it once the temperature is down around zero *but* usually only when I've left the car for 24 hours or more. If I've started it in the same day, the temperature doesn't seem to bother it. I'm similar age and mileage and I'm not concerned (famous last words)
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      01-12-2020, 12:20 PM   #5
CJF30
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Itís not happened again since so fingers crossed it was off on mine. Thanks for the responses. Iíll just keep an eye on it and hope for the best.
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      01-13-2020, 09:41 AM   #6
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my f30 335d 2 years old does it very often. Generally when temps are below +5 i can sometime see this message, which is quite normal for diesel car anyway. Nothing to worry about.
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      01-13-2020, 11:43 AM   #7
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glow plugs

glowplugs are almost always used, see the chart in the newtis doc.
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