Transmission rpm went into the red and car made rattling ...


Transmission rpm went into the red and car made rattling sounds underneath gear selector when into n and now in park since the high reviving of [engine](/topics-engine/) and now car won’t star Mechanic's Assistant: Have yo...

Transmission rpm went into the red and car made rattling sounds underneath gear selector when into n and now in park since the high reviving of [engine](/topics-engine/) and now car won’t star Mechanic's Assistant: Have you checked the level of your transmission fluid? Is it bright red, or is it dirty? I suspect it to be low saw dripping from transmission pan Mechanic's Assistant: What is the make/model/year of your transmissions? 2011 BMW X5 35d Mechanic's Assistant: Are you fixing your X5 yourself? What have you tried so far? I planned on gettin the transmission fluid ,gasket, and pan replaced tomorrow but the cars transmission seems to have over heated tonight on my way home from work had to get a Tow Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Unable to start the car after high rpms at transmission and car has a stored fault code of 46f9 reductant tank temperature sensor

Automotive Expert
Hi I'm Daniel and assisting you today on your inquiry. I'm sorry to hear about the issue you have with your X5. The rpm gauge on the instrument cluster is for the engine itself and not the transmission. Fron your description it looks like the engine over reved. What actually happens now if you try to start it? Is the starter cranking the engine over or is nothing happening at all? Are you planning to repair the car yourself or looking for possible causes? What tools and equipment do you have at hand?

I hear the engine trying to crank but it won't start I have lights horn ect just won't start maybe because it was still very hot

Maybe it's the timing chain I heard a rattling before car stalled I hope it's just was to hot
Automotive Expert
Could be multiple things. As you heard mechanical noises unfortunately good possible that we have a issue with the timing chain or similar. I would suggest to check for proper Diesel pressure and perform a compression test next to make sure we don't have a mechanical damage. Let me know the result.
Automotive Expert
Hi. Following up on our conversation. Have you been able to take another look at the car and check the items as mentioned? Let me know if I can provide anything else at this point. Thanks.

What others are asking

I drove thru a puddle now car wont start
Hi there: First off, we glad you're safe and that your car didn't shut off while driving through the deep puddle (https://www.yourmechanic.com/question/car-stalled-in-high-water). One of the hardest things to diagnose is electrical issues (https://www.yourmechanic.com/services/electric-problems-inspection) that are caused by water damage. Sometimes...
Brake malfunction dynamic drive on 2005 BMW 745Li
Hello. It sounds like your 2005 BMW 745Li may have a problem with your electric/charging system or that the battery is faulty (https://www.yourmechanic.com/services/battery-replacement). If the electric/charging system is charging too low, it will cause the electronics to go “haywire” because...
Car turning over, but it will not start.
You may need to have the key re-flashed to the car's computer. It sounds like every time you leave the car it has a problem re-associating itself with the car. I would recommend taking it back to the Chevy dealer...
Serpentine Belt broke How do i tell if its the Altenator
A lot depends on *why *the serpentine belt broke. If the belt broke after 120,000 miles simply due to age, that's fine, but if it broke because one of the rotating elements - the tensioner, pulleys, alternator pulley, and so...
Overheating
If the engine overheats in the first 5 to 7 minutes of running then you most likely have a water pump that is not circulating fluid or the thermostat is stuck in the closed position. You should start and run...
Throttle body issues
Hello, and thank you for writing in. The Ford electronic throttle bodies have a history of failing unfortunately. You may even want to look up warranty and recall information for your vehicle based on your VIN. The new unit that...
My Electric water pump on my 2014 320i BMW runs constantly after shutdown. Drains the battery dead after about five hours. What
The electric water pump circuit uses both a temperature sensor and a relay to control it's function. The temperature sensor tells the water pump there is a demand for it to circulate coolant based on engine temperature. The relay acts...
I put in a new battery, now it reads service advancetrac & I have no power steering
Hi There, It sounds like you lost voltage. Load test your battery to be sure it was not a defective battery and check your charging system voltage. Certain circuits like the ABS module (AdvanceTrac) and the electric power assist steering...
how to fix a 2010 ford fusion rear parking aid inop
It is very possible that one of the rear parking sensors could be the cause of this issue. However I would recommend having each sensor tested individually to determine which one is faulty before just replacing them all. Ensure that...