First phase (August 2010 - July 2015) The service was introduced by
Keretapi Tanah Melayu (KTM) on 12 August 2010 between
Ipoh and
Seremban following the completion of the electrification and double-tracking of the Rawang to Ipoh stretch of the
West Coast Line. Its inaugural run was celebrated with an opening ceremony at
Kuala Lumpur railway station. Initially, services stretched southwards to Seremban, but the
KL Sentral-
Seremban sector was taken out of service in October 2012. At launch, there were three service types—Platinum, Gold, and Silver. On the fastest Platinum service, the trip was covered in two hours, one hour faster than by car. Gold and Silver services had more stops, hence taking up to 2 hours and 30 minutes. The route was served solely by 5
Class 91 electric trains.
Second phase (July–October 2015) , opened on the second phase.|right The service was extended from
Ipoh to
Padang Besar via
Butterworth, the mainland town opposite
George Town, with the introduction of the ETS Transit on 10 July 2015, with stops at 24 stations. At the inception of service, only one train service in both directions was introduced. This service was named the
ETS Transit. On the following day, 11 July 2015, a new service called the
ETS Ekspres between
KL Sentral and
Padang Besar, via
Butterworth was introduced, which only stops at 15 stations. Again, only one service for both directions was introduced. Subsequently, on 1 September 2015, an additional service between
KL Sentral and was introduced. New rolling stock, the
Class 93 trains, were introduced in conjunction with the extended service.
Third phase (October 2015 - March 2025) On 10 October 2015, the ETS service was extended southwards from
KL Sentral to with the introduction of a new service between and . The extension of the KTM ETS service to utilizes the electrified double-track between and which was completed in 2014. This extension of service also saw the ETS service returning to after being discontinued in 2012. On the same date, 10 October 2015, a new service was launched between and in addition to existing services. However, this service was subsequently reduced in frequency and ultimately terminated with the introduction of the new
KTM Komuter Northern Sector. There were constant revisions of timetables and services as more trains became available, with more train services being added for each of the route segments. The Platinum, Gold, and Silver services were also reintroduced while the terms "ETS Ekspres" and "ETS Transit" were retired. In 2020, due to traveling restrictions amid efforts to curb the
COVID-19 pandemic, there were only two trips per day along the five then operational routes albeit with fewer Gold service trains. Services were restored as the pandemic situation improved. On 1 August 2024, KTM reintroduced the ETS Express services consisting of three limited-stop daily services between KL Sentral and Ipoh, Butterworth and Padang Besar respectively, replacing former ETS Gold and ETS Platinum services on these routes. The new services reduced travel times to 2 hours between KL Sentral and Ipoh, 3 hours 35 minutes between KL Sentral and Butterworth and 4 hours 50 minutes between KL and Padang Besar. They were introduced after the completion of Phase 1 of the Klang Valley Double Track and Electrification (KVDT) Project.
Fourth phase (March 2025 - January 2026) With the staggered completion of the
Gemas-JB Electrified Double Tracking Project (EDTP), ETS services were extended southwards in stages throughout 2025 as portions of the line were completed. On 15 March 2025, the ETS was extended beyond station to the new station, which was rebuilt as part of the EDTP. On 30 August 2025, the ETS line was extended to station, with the introduction of a new ETS Platinum service between and Kluang. Between 10 October 2025 until 12 December 2025, KTM operated an additional weekend-only (every Friday, Saturday and Sunday) service between KL Sentral and Kluang, providing 2 return trips for those 3 days. On 12 December 2025, the KL Sentral-Kluang route was extended to JB Sentral. This marks the completion of the electrification and double tracking of the main passenger trunk line on the
KTM West Coast railway line between Peninsular Malaysia's northern and southern borders. The existing ETS Gold service from Padang Besar was extended from Segamat to JB Sentral on 1 January 2026, for the first time providing a complete direct north–south electric train service for Peninsular Malaysia. Since 24 February 2026, ETS Platinum services from and Padang Besar to JB Sentral were introduced. ==List of stations==