Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1987L7 (E23) L6-3430CC 3.4L SOHC (M30)REPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSCUSTOMER INTERESTLCD DISPLAY MODULE - ERRONEOUS DISPLAY
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
LCD Display Module - Erroneous Display
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION LCD Display Module - Erroneous Display
90bmw12 Group 62 Instruments
Bulletin Number 62 01 90 (3007)
Woodcliff Lake, NJ August 1990
Service Engineering
This Service Information bulletin supersedes S.I. 62 01 90 (3007) dated April 1990. It explains how the production date code is made-up.
Please remove and discard S.I. 62 01 90 (3007) dated April 1990 from your S.I. binder.
SUBJECT: Erroneous Display In LCD Display Module
MODEL: E32 and E34 (with Redesigned Instrument Cluster)
Situation: After switching the ignition ON, flashing and illegible displays may alternately appear in the LCD Display Module.
Cause: Interference from the IHKR/IHKA coolant pump.
Correction: Replace the coolant pump with one equipped with a protective diode.
These pumps have a production date of 279 or later.
Warranty
Status: Covered under the terms of the BMW New Car Limited Warranty of 3 Years/36,000 Miles.
Defect code: 64 11 35 79 00
Labor operation: 64 11 260
Labor allowance: 7 FRU - All except 750iL
9 FRU - 750iL
Any questions regarding warranty coverage should be discussed with your District Service Manager.
Bulletin Number 62 01 90 (3007)
Woodcliff Lake, NJ August 1990
Service Engineering
This Service Information bulletin supersedes S.I. 62 01 90 (3007) dated April 1990. It explains how the production date code is made-up.
Please remove and discard S.I. 62 01 90 (3007) dated April 1990 from your S.I. binder.
SUBJECT: Erroneous Display In LCD Display Module
MODEL: E32 and E34 (with Redesigned Instrument Cluster)
Situation: After switching the ignition ON, flashing and illegible displays may alternately appear in the LCD Display Module.
Cause: Interference from the IHKR/IHKA coolant pump.
Correction: Replace the coolant pump with one equipped with a protective diode.
These pumps have a production date of 279 or later.
Warranty
Status: Covered under the terms of the BMW New Car Limited Warranty of 3 Years/36,000 Miles.
Defect code: 64 11 35 79 00
Labor operation: 64 11 260
Labor allowance: 7 FRU - All except 750iL
9 FRU - 750iL
Any questions regarding warranty coverage should be discussed with your District Service Manager.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.