PRE-RELEASE
Rear electrical centre 701 (REC)
| Rear electrical centre 701 (REC) |
| Location |
The electrical centre is located in the luggage compartment on the left-hand wheel housing.
| Main task |
Act as the electrical centre for the rear of the car and the roof, and perform certain logic functions such as for the rear lighting.
| Type |
Electrical centre with relays, Maxi and micro fuses and an integrated control module for logic functions. Wiring for a trailer connector is connected to the electrical centre.
| Connect |
The electrical centre is fed with a +30 supply from the engine bay electrical centre (342) and grounded to grounding points G3 and G29. The electrical centre is connected to the wiring harness via 7 connectors:
| 1. |
Body 1 (in diagram = B1)
to main wiring harness
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| 2. |
Body 2 (in diagram = B2)
to main wiring harness
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| 3. |
Body 3 (in diagram = B3)
to main wiring harness
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| 4. |
Head 1 (in diagram = H1)
to roof wiring harness
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| 5. |
Head 2 (in diagram = H2)
4D/5D to roof harness CV to main wiring harness 
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| 6. |
Rear (in diagram = R)
to rear wiring harness
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| 7. |
Tail (in diagram = T)
4D: to the main wiring harness 
5D: to rear harness 
CV: to rear harness 
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The connectors for the main and rear wiring harnesses each comprise four subconnectors, which are named A, B, C and D in the wiring diagrams, for example B1-B.
The TR-WH connector is used for a trailer connector. In some cases a special module, TR-MOD, is required.
The following current circuits are distributed by the electrical centre:
+30 power supply, rear electrical centre
+15 power supply, rear electrical centre
| Fuses |
The electrical centre can contain a greater number of fuses than those listed below. In such cases, these are not connected to a wiring harness.
| No | Amp | Type | Function | Illustration | |||||||||
| 1 | -- | ||||||||||||
| 2 | -- | ||||||||||||
| 3 | -- | ||||||||||||
| 4 | 40 | +30 | Electrically adjustable seat without memory Relay unit, seat (CV) |
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| 5 | 40 | +30 | Electrically heated rear window (115) STC control module (CV) (565) Antenna amplifier (624) |
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| 6 | 30 | +30 | Control module, rear left door (702RL) Control module, rear left window lift (575RL) |
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| 7 | 30 | +30 | Control module, right rear door (702RR) Control module, rear left window lift (575RR) |
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| 8 | 20 | +30 | Connection, trailer (258) |
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| 9 | -- | ||||||||||||
| 10 | 30 | High-level brake light Trailer lighting Luggage compartment illumination Left rear lighting brake lights Right rear lighting: Direction indicators taillights Reversing lights |
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| 11 | 10 | +30 | Control module, all-wheel drive (724) |
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| 12 | -- | ||||||||||||
| 13 | -- | ||||||||||||
| 14 | 15 | +30 | Rear window wiper motor (63R) |
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| 15 | 15 | +30 | Heating, left seat (64FL) |
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| 16 | 15 | +30 | Heating, right seat (64FR) |
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| 17 | 7.5 | +15 |
Rain sensor (649)
Sunroof (182)
Interior rearview mirror (681) with:
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| 18 | 15 | +30 | Sunroof (182) |
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| 19 | -- | ||||||||||||
| 20 | 7.5 | +30 | Radio receiver, satellite radio (349) Radio receiver, TMC (718) |
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| 21 | 7.5 | +30 | Control module, rear doors (702R) Control module, rear window lifts (575R) Control module, SPA (630) Front lamp unit, interior lighting (185F) on CV |
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| 22 | 30 | +30 | Head unit, radio/navigation (353/635) Amplifier (354SM), Bose® Centerpoint® Surround System |
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| 23 | 7.5 | +30 | Control module, TPMS |
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| 24 | 10 | +30 | Siren, anti-theft alarm (275) Control module, OnStar (673) Anti-theft alarm sensor (690) |
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| 25 | 30 | +30 | Electrically adjustable driver's seat with memory control module (357Dk) Electrically adjustable seat without memory (CV) |
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| 26 | 30 | -- | Rear fog light Number plate lighting Luggage compartment illumination Trailer lighting Left rear lighting Direction indicators taillights Reversing lights Right rear lighting: brake lights |
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| 27 | 10 | -- | Electrically controlled lumbar support |
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| 28 | - | - | |||||||||||
| 29 | -- | ||||||||||||
| Relays |
The electrical centre can contain a greater number of relays than those listed below. In such cases, these are not connected to a wiring harness.
| Location | No | Description | Illustration | Diagram |
| R1 | 446 | Electrically adjustable seat relay |
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LH RH |
| R2 | 757R | Relay, +15, REC |
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| R3 | -- | |||
| R4 | 113 | Electrically heated rear window relay |
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| R5 | 83a | Rear window wiper relay |
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| R6 | -- | |||
| R7 | 710 | Boot lid opening motor relay |
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| R8 | -- | |||
| R9 | -- | |||
| R10 | -- | |||
| R11 | -- |
