U0197: Perda de comunicação com o módulo de controle do telefone
O que fazer
Do not pick the phone up. That is the whole of the safety advice here, and it needs saying because this fault creates exactly that temptation.
The hands-free system is what makes taking a call in the car lawful in most places. When it stops working, the pressure is to hold the phone instead — dangerous, and expensive if you are caught. Let calls go to voicemail, and if one genuinely has to be answered, stop properly first.
One check tells you whether the usual free fix is worth trying. Go into the car's settings menu and see whether the phone system is still listed there at all.
If it is listed but will not pair, delete the pairing on both the car and the phone and start again from scratch. That fixes a surprising number and costs nothing.
If it is not listed at all, the car cannot see its own phone module, and no amount of re-pairing will help. That needs a garage.
Two more things worth checking, because on most modern cars the phone system is not a separate box. Does the radio still work? Do the connected services and the phone app still work? If either has gone too, that is where the fault is, and saying so stops the wrong thing being repaired.
The car is otherwise entirely fine to drive.
O que este código significa
The telephone control module has stopped being heard from. The general reasoning is at U0100, and U0498 makes the argument that gives this page its severity — hands-free operation is what makes using a telephone in a moving vehicle lawful in most jurisdictions, so a driver whose hands-free has stopped is a driver under pressure to pick the phone up.
That instruction comes first and does not change: let calls go to voicemail, and stop the vehicle if one must be answered.
Silence changes which of U0498's remedies is worth trying, and it is worth being honest about that rather than repeating the list.
U0498's free fix — deleting the pairing on both sides and starting again — is much less likely to help here. A module that is not communicating with the vehicle will not appear in the vehicle's own menus to be paired at all. So the test that separates the two situations is simple: can the vehicle still see its own telephone module in its settings?
- Visible but not pairing — the pairing is stale, and re-pairing is worth a try.
- Not visible at all — the module is not there as far as the vehicle is concerned, and pairing cannot help.
On most modern vehicles the telephone function is not a separate box. It lives inside the head unit or the telematics module, so if the radio has gone too, U0184 is the better page; if connected services have gone too, U0198 is. Establishing which saves the wrong repair.
Where it is genuinely its own module, the aerial matters — the phone connection uses the roof antenna at U0185 — and so does a non-original head unit, which frequently replaces the hands-free function with something the vehicle does not recognise.
Causas prováveis
Comece aqui
- Fusível queimado ou alimentação inoperante · fácil
- Módulo não codificado para o veículo · especializado
- Multimídia de reposição no lugar da original · moderado
- Conector corroído ou frouxo · fácil
Menos comum
- Antena GPS desconectada ou danificada · moderado
- Fiação do barramento de dados danificada · moderado
Sintomas
Componentes envolvidos
Informação, não instrução
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Antes de agir com base em qualquer orientação, peça a verificação de uma pessoa com formação técnica, seguindo o procedimento do próprio fabricante para o seu veículo. Nada aqui substitui esse procedimento.
Experiência da comunidade
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