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SIB 64 09 13: Air conditioning failure

Air conditioning failure on N20/N54 engines (2013–2014); BMW released a software update.

BMW service bulletin · NHTSA ID 10147951 · Jan 2014 · also written SI B64 09 13, B640913

What it covers

A service bulletin tells BMW technicians how to diagnose or fix a known issue. It is not a recall: a repair under a bulletin is normally paid by the owner unless the car is still under warranty or a warranty extension applies.

Service Action: Program IHKA Control Unit. CAUSE IHKA software error

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 64 09 13
Also written: SI B64 09 13, B640913, 64 09 13, SIB-64-09-13, SI B640913
NHTSA ID10147951
Document IDs filed640913
TypeService bulletin
Date
ModelsZ4
Model years2013–2014
ChassisE89
EnginesN20, N54
Component (NHTSA)Engine And Engine Cooling
Visibility
Visibility › Defroster/Defogger/Hvac System

Model, year and engine coverage comes from NHTSA's records. Not every car in this range is affected; the official document lists the exact production dates and conditions.

Related bulletins

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Source: NHTSA Manufacturer Communications (public data). BimmerBench is not affiliated with BMW or NHTSA. The title and description above are our own plain-English summary; the full bulletin is BMW's document, linked above.

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