Card Rejected At Gate
If your Touch ‘n Go card is rejected at a KLIA Ekspres or other Rapid KL rail gate, the unusual step is not to keep tapping. The card is used for tap-in and tap-out across Kuala Lumpur rail and bus services, but repeating taps make current journeys unreadable. Your first step is to ask station staff.

Most rejections come from the card or from the record of your last journey rather than from the gate. The causes usually listed are:
- The latest tap-out registered the previous trip. So a new journey wasn't recorded, and the card leaves the gate as a "short fare" that needs closing before the next tap in.
- The card balance wasn't checked, and there wasn't enough stored value for this entry or exit.
- The chips got scrambled, perhaps by holding the card close to a phone during entry or exit.
- Credit or debit card payments are not yet enabled at the gate.
What to do at the gate
The first course is the immediate one. At a Rapid KL gate, look for Service Ambassadors from KLIA Ekspres or attendants from other services, and get them to check the card reading at the gate. Failing that, make for the station counter. KLIA Ekspres says a “replacement ticket may be issued immediately for unutilised trips if the problem is due to a technical fault, subject to our Conditions of Carriage.” This advice appears limited to KLIA Ekspres explicitly, so investigate at the counter if you're on another Rapid KL line.
Getting the money back
The refund of stored value or disputing of a wrong deducted fare follows from here respectively, depending on the nature of the fault. Faulty cards, without a doubt, should be investigated by Touch 'n Go on: Passengers should bring their faulty cards to Touch ‘n Go locations for investigation. Considering all these points together with faulty cards, you have various options to refund stored card value, through Careline, the e-Refund Form on the website, or the Touch ‘n Go eWallet. Remaining trips on KLIA Ekspres cancel with the issuance of a replacement ticket, as long as the card fault was a technical rather than passenger issue.
Keeping it from happening again
Your normal habits should avoid reoccurrence, because they mean fewer reasons for cards to get rejected outright and cost you a trip. Keep enough stored value in the first place, avoiding those "low balance" rejections. Know where the touchpoint attendants or staff sit, not only the reader and the station counter. And when a card does fail, ask rather than tap: a reader fault recorded by staff is refunded, a dozen angry taps are not.