[chiller]

Hi everyone,

Just got a 2009 335xi M-sport. Car drives great, but ever since it got cold i've been experiencing an issue on startup.

Scenario: Car is out in cold (below 0 celcius) for day

Symptoms: Upon startup, car experiences rough idle; fluctuates rapidly between 1000rpm and 600rpm; car experiences vibration and shaking as a result; yellow engine light comes on

A lot of reading indicates injectors, spark plugs, coils or vanos solenoid. Not sure which one it is, but would a engine code read out tell me? Moreover, I did see a service bulletin (see below) - would this mean its a recall? My car is out of warranty, so I'd like advice on how to resolve.

Thanks in advance.


Service Bulletin:13 04 09 Cold Start rough running with misfire faults

SUBJECT
N54 - Cold Start Rough Running with Misfire Faults


MODEL
E82, E88, E90, E92, E93, E60, E61 with N54 engine


SITUATION
The customer may complain that during the cold start in the morning, the engine runs very roughly and the Service Engine Soon lamp is illuminated.

Various misfire fault codes (e.g., 29CC, 29D2, 29D1, 29D0, 29C0, 29CF) may be stored in the DME control module.

The engine rough running complaint can be reproduced on a cold start in the workshop. During the course of diagnosis, the spark plugs, removed from the misfiring cylinders after the problem was reproduced, are found to be soaked ("wet") with fuel, while the injector tips are covered with a layer of carbon deposit.

CAUSE
Possible cause: high pressure injector failure (leakage or incorrect spraying pattern), due to internal wear or unfavorable stack of tolerances

CORRECTION
In case of a reproducible "cold start" rough engine running with corresponding misfire faults, replace the high pressure injector of the affected cylinder, using the improved part (P/N 13 53 7 585 261). Follow TIS Repair Instruction RA 13 53 310 for injector removal and installation. If the spark plug from the misfiring cylinder shows wetness (fuel soaking) after cold start removal, then it should be replaced as well.

After an injector replacement, perform the individual injector calibration (adjustment) with the DME control module, as per SI B12 26 08.

IMPORTANT:

If during a cold start rough engine running, the misfire faults are stored in more than one cylinder of the same bank, all three injectors from that bank need to be replaced.

In case the misfire faults are stored on three (or more) cylinders, then the complete set of injectors (6) needs to be installed.

IMPORTANT NOTE:

For N54 misfire fault complaints during normal engine operation (misfire faults not related to the engine's "cold start"), refer to the following Service bulletins:

B12 05 09 - N54 (E6x) Misfire Faults due to DME Software Error

B12 06 09 - N54 (E9x) Misfire Faults due to DME Software Error

and I also found this one

13 05 08 Rough Idle, Rough Running, Misfiring and loss of power
SUBJECT
Rough Idle, Rough Running, Misfiring and Loss of Power


MODEL
E90, E92 and E93 M3


SITUATION
The customer complains that the vehicle runs rough while idling or driving; the vehicle can misfire; and a loss of power can occur. In some cases, the vehicle's Service Engine Soon lamp is illuminated and fault code 2B23 (Idle-air actuator, regulator monitoring) will be stored in the DME fault memory. In some circumstances, the vehicle's engine control may enter the emergency program and store various misfire faults.

CAUSE
The idle-air actuator or idle circuit has become blocked or restricted, due to an internal separation of the rubber hose located between the idle-air actuator and the intake manifold. The layers of the rubber hose will tear away and restrict the idle-air actuator or one of the idle strips located on each engine bank.

PROCEDURE
On a customer complaint basis, remove the intake manifold in accordance with RA 11 61 050, Removing and installing air intake manifold (S65), to inspect all idle circuit components.



Remove and inspect the hose (1) located between the idle-air actuator and intake manifold. Remove and inspect the idle-air actuator (2). If debris is found, remove the debris, but do not replace the idle-air actuator. Remove and inspect both idle strips. If debris is found inside the idle strips, then both idle strips must be replaced. Whenever rubber hose debris is found in the idle circuit, it will be necessary to replace the rubber hose (1) between the idle-air actuator and the intake manifold as well. The rubber hose (4) located between the idle strips should be inspected and cleaned; do not replace this item.

[BlackedOutBimmer]

TSB's and different than recalls I believe.

I think, TSB's are not "mandatory" , where recalls are. Recalls are safety issues, where TSB's are more things that are "common problems".

[chiller]

So, does that mean if I were to bring it into the dealership it would not be covered?