[3] The line is one of the two services on the Express Rail Link (ERL) system, sharing the same tracks as the KLIA Ekspres.

Connecting station, without paid-area integration, to: Feeder bus T410 to  KG26  Taman Connaught for the MRT Kajang Line.

Planned interchange to Putrajaya Monorail Common station with  KE3  ERL KLIA Ekspres.

On 24 August 2010, Express Rail Link suffered their first reported accident in which 3 passengers were injured.

[4][5] On 4 April 2020, due to the Malaysian movement control order, which resulted in a significant reduction in ridership, all ERL rail services were temporarily suspended.

[7] On 4 June 2021, due to the total lockdown phase of the Malaysian movement control order, all ERL rail services were temporarily suspended again.

Weekly or monthly travel passes (TravelCard) linked to MyKad can be purchased at the ticketing office or via KLIA Ekspres website.