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eBay£79.95Visit shop CONTROL UNIT RELAY GLOW PLUG 12217788327 FOR BMW 3 5 6 7 SERIES, X3, X5, X6
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This D2P Glow Plug Control Unit Relay (TB12217801201) is designed for owners of specific BMW diesel models seeking to restore optimal engine starting performance, especially in cold weather. Its key benefit is ensuring the reliable and efficient operation of the glow plug system. A potential caveat is its specific compatibility, requiring verification against your vehicle's existing part numbers and engine type.
| Series | 3 |
|---|---|
| Model Part Number | TB12217801201 |
| Brand | D2P |
This D2P relay is compatible with BMW part numbers 12217788327, 12217786821, 12217801200, 7786821, 7801200, and 12217801201.
It is designed for various BMW models including the 3, 5, 6, and 7 Series, as well as the X3, X5, and X6.
This unit is suitable for specific diesel engine variants such as the 330d, 325d, 525d, 530d, 635d, and 730d, typically those with 3.0L engines.
Always cross-reference the listed compatible OE part numbers with the part number on your vehicle's existing unit and consult your vehicle's service manual or a BMW specialist.
Its primary function is to regulate the electrical current to the glow plugs, ensuring they heat up sufficiently for reliable engine starting, especially in cold temperatures.
Standard automotive tools are usually sufficient, but depending on the vehicle's configuration, access may be difficult. Professional installation is recommended if you are not experienced.
Failure can result in difficult engine starting, rough idling on startup, and potentially the glow plug warning light illuminating on the dashboard.
Verify the glow plug system is functioning correctly. Check glow plugs themselves and the control unit relay for proper power and signal. Ensure the new relay is correctly installed and compatible.
This could indicate a fault within the glow plug circuit, including the relay. Consult a diagnostic tool for specific error codes related to the glow plug system.
A malfunctioning glow plug relay might not be fully activating the glow plugs, leading to incomplete combustion on startup. Replacement of the relay may resolve this.
Compatibility Check: Before installation, verify that your BMW model and year are listed in the product description and that the OE part numbers (12217788327, 12217786821, 12217801200, 7786821, 7801200, 12217801201) match your existing unit or the manufacturer's recommendation for your specific vehicle.
Installation: This component is typically located near the glow plugs and may require access through the engine bay. Installation involves disconnecting the battery, removing the old unit, and connecting the new one securely. Professional installation by a qualified mechanic is recommended if you are unfamiliar with automotive electrical systems.
Care: As an electronic control unit, this relay requires no regular maintenance. Ensure connections remain clean and free of corrosion. Protect the unit from excessive moisture and extreme heat.
