SUBJECT
Intermittent Hydraulic Valve Adjuster (HVA) "Ticking" or "Rattling" Noises
MODEL
All E83, E85, E86, E60, E61, E70, E90, E91, E92, and E93 with the N52 or N52K engines
SITUATION
An occasional ticking or rattling noise from the HVA elements may occur during cold engine starts or
frequent short distance driving.
CAUSE
In these situations the HVA elements may have not yet been supplied with sufficient amount of air-free
oil. This condition will not cause any damage to the engine and usually remedies itself with a longer
driving distance or operating times at full operating temperature.
CORRECTION
In the event of a customer complaint please perform the following the HVA bleeding procedure.
PROCEDURE
Important notes:
The bleed time may take anywhere between two minutes and (in rare cases) a maximum of 30 minutes.
This procedure is to be performed on a level surface with the vehicle stationary, and in a properly
ventilated area.
Procedure preconditions:
Engine oil level correct � neither under filled nor overfilled
Engine running at operating temperature
1. Bring the engine up to an operating speed (no load) of 2000 � 3000 rpm and maintain this condition
for three minutes (bleeding procedure).
2. Let the engine idle for 15 � 30 seconds and reevaluate if the noise is still present or not.
3. Engine quiet � Procedure is finished.
4. Engine noise is still present � Repeat procedure � Steps #1 and #2 up to a maximum of 5 times.
5. Only if the noise remains after performing the bleeding procedure 5 times � proceed by performing
the procedure for a final time, also at an engine operating speed of 2000 � 3000 rpm, but for a total time
duration of 15 minutes.
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.
SI B 11 09 07
Engine
July 2007
Technical Service
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Note: The following explanations will spell out the correct use of the work times.
Defect Code
11 12 94 39 00
Labor Operation 00 57
087 Perform bleeding up to three times
Main Work
Labor Allowance 5 FRU
Labor Operation 00 57
088 Perform bleeding 5 complete times
Main Work
Labor Allowance 7 FRU
Labor Operation 00 57
089
Perform bleeding 5 complete times plus additional 15 minute
bleed run
Main Work
Labor Allowance 11 FRU
Labor Operation 00 57
717 Perform bleeding up to three times
+ Associated
Work
Labor Allowance 3 FRU
Labor Operation 00 57
718 Perform bleeding 5 complete times
+ Associated
Work
Labor Allowance 5 FRU
Labor Operation 00 57
719
Perform bleeding 5 complete times plus additional 15 minute
bleed run
+ Associated
Work
Labor Allowance 9 FRU
Main Work: Use this labor operation number when the only repair performed is the
listed warranty repair.
OR
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+Associated
Work:
Use this labor operation number when other repairs or services are
performed along with the listed warranty repair.
Under no circumstances should both labor operation numbers be claimed.
Attempts to claim both times will result in an unnecessary delay in claim
processing and payment.