How is the charge indicator lamp activated on the multi-function control alternator on 2006 BMW X5?

In the multi-function control alternator there is a charge indicator lamp, whose electrical connection is an integrated electronic switch in the alternator controller, which is fed from terminal 15 of the 3-pin connector at the rear of the alternator. The controller monitors the voltage between terminals 30 and 15 and by means of sending a message to the ECM to illuminate the charge indication lamp. It also incorporates built-in self-diagnostic capability for faults that energizes the battery charge indicator lamp if there is failure of the accessory belt, no charge due to an electrical or electronic fault, interruption in the excitation circuit, over-voltage due to a defective controller output stage, a break or fault in the charge line or no charge due to a fault in the alternator.

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5 Alternators found

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2006 BMW X5 Exchange Alternator
Part Number: 12317501690
$417.32 MSRP: $582.30
You Save: $164.98 (29%)
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Product Specifications
- Other Name: Exchange Compact Generator; Alternator
- Item Weight: 13.50 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12317501690
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following 2006 BMW X5 Submodels:
- 3.0i(E53)
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2006 BMW X5 Exchange Alternator
Part Number: 12317540992
$1307.72 MSRP: $1660.72
You Save: $353.00 (22%)
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Product Specifications
- Other Name: Exchange Generator; Alternator
- Replaced by: 12317540990
- Item Weight: 13.00 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12317540992
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
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Fits the following 2006 BMW X5 Submodels:
- 4.4i(E53)
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2006 BMW X5 Exchange Alternator
Part Number: 12317551253
$463.56 MSRP: $648.28
You Save: $184.72 (29%)
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Product Specifications
- Other Name: Exchange Generator; Alternator
- Item Weight: 12.60 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12317551253
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following 2006 BMW X5 Submodels:
- 3.0i(E53)
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2006 BMW X5 Exchange Alternator
Part Number: 12317501599
Product Specifications
- Other Name: Exchange Compact Generator
- Item Weight: 12.60 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12317501599
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following 2006 BMW X5 Submodels:
- 3.0i(E53)
View related parts
2006 BMW X5 Exchange Alternator
Part Number: 12317540994
Product Specifications
- Other Name: Exchange Generator; Alternator
- Replaced by: 12317540993
- Item Weight: 13.30 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12317540994
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
More Info
Fits the following 2006 BMW X5 Submodels:
- 4.4i(E53), 4.8is(E53)

2006 BMW X5 Alternator

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2006 BMW X5 Alternator Parts Questions & Experts Answers

Q:
How is the charge indicator lamp activated on the multi-function control alternator on 2006 BMW X5?
Posted by Glen S.
A:
In the multi-function control alternator there is a charge indicator lamp, whose electrical connection is an integrated electronic switch in the alternator controller, which is fed from terminal 15 of the 3-pin connector at the rear of the alternator. The controller monitors the voltage between terminals 30 and 15 and by means of sending a message to the ECM to illuminate the charge indication lamp. It also incorporates built-in self-diagnostic capability for faults that energizes the battery charge indicator lamp if there is failure of the accessory belt, no charge due to an electrical or electronic fault, interruption in the excitation circuit, over-voltage due to a defective controller output stage, a break or fault in the charge line or no charge due to a fault in the alternator.
Answered by BMW Parts Specialist Adrian / Feb 16, 2026