Common Failures of BYD 1256831700 Auxiliary Water Pump for Atto3 PRO EV/Yuan PRO EV/eT3
- Pump Overheating: In Atto3 PRO EV, the auxiliary water pump (OE: 1256831700) often overheats, mainly due to long - term operation.
- Noisy Operation: Many Yuan PRO EV owners find that the auxiliary water pump makes loud noises, which may be caused by bearing wear.
- Low Flow Rate: In eT3, the auxiliary water pump with OE 1256831700 sometimes has a low flow rate, affecting the cooling system.
Maintenance Tips of BYD 1256831700 Auxiliary Water Pump for Atto3 PRO EV/Yuan PRO EV/eT3
- First, before replacing the BYD Auxiliary Water Pump (OE# 1256831700) in Atto3 PRO EV, Yuan PRO EV or eT3, ensure the engine is completely cool. This prevents burns and damage to the new pump.
- Next, disconnect the battery to avoid electrical shocks. This is a crucial step for any electrical component replacement in BYD vehicles.
- When removing the old auxiliary water pump, carefully note the position of all hoses and connectors. This helps in proper reinstallation of the new pump (OE# 1256831700).
- Apply a thin layer of gasket sealant to the new BYD auxiliary water pump. This ensures a tight seal and prevents coolant leaks.
- Finally, after installation, refill the coolant system and check for any leaks. Running the engine briefly can help identify potential issues.
Electrical Hazard Warning – The Auxiliary Water Pump (OE# 1256831700) is an electrical component. Do not touch the terminals with wet hands or in a damp environment.